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Get college assignment help at Smashing Essays Question />I am confused on this material…. ATTACHMENT PREVIEW Download attachment Screen Shot 2019-08-01 at 2.28.27 AM.png The Acme Company manufactures widgets. The distribution of widget weights is bell-shaped. The widget weights have a mean of 35 ounces and a standard deviation of 8 ounces. Use the Empirical Rule, find a) 95% of the widget weights lie between and b) What percentage of the widget weights lie between 27 and 51 ounces? c) What percentage of the widget weights lie above 11 ? % Suggestion: sketch the distribution in order to answer these questions. Get help: Video

A taxi agency collected data from a random sample of

Question A taxi agency collected data from a random sample of 600 people in their city asking whether or not they own a car. Based on the results, they report that 44% of the people in the state own a car. Why is this statistic misleading?Select the correct answer below:The statistic contains a calculation error.The sample size is insufficient.The data contains an outlier.The sample is biased.Question 2In order to study the shoe sales of people in his store, Billy samples the population by dividing the customers by age and randomly selecting a proportionate number of customers from each age group. Which type of sampling is used?Select the correct answer below:systematic samplingstratified samplingconvenience samplingcluster samplingQuestion 3Is a survey that asks the opinions of students about a proposed tour program to a hill station an observational study or experimental study? If it is an experimental study, what is the controlled factor?Select the correct answer below:The study is an experiment. The controlled factor is the students.The study is an observational study.The study is an experiment. The controlled factor is the hill station.The study is an experiment. The controlled factor is the survey.Question 4To determine whether or not number of complaints influences accidents occurring in an area, Charles has designed a survey. What is the explanatory variable?Select the correct answer below:number of complaintsaccidents occurring in an areathe number of people surveyednone of the aboveQuestion 5A farmer divided his piece of land into 2 equivalent groups and the quality of the soil is the same in both of these groups. He used fertilizers for the first group of land. He did not use fertilizers for the second group of land. At the end of the season, he measured the yield of the crops in these 2 groups. Is the study observational or experimental? If it is an experiment, what is the controlled factor?Select the correct answer below:The study is an experiment. The controlled factor is the fertilizer.The study is an observational study.The study is an experiment. The controlled factor is the land.The study is an experiment. The controlled factor is the growth of the crops.Question 6Which of the following scenarios contain biased samples? Select all that apply.Select all that apply:To estimate the mean number of sales that coworkers take at his company, Benjamin collects data from a randomly selected proportionate number of coworkers from each company site.Howard wants to estimate the mean cost of waste in his company. He collects data by recording waste from the first process step.To estimate the political party distribution of residents in his state, Sean collects data from a large group of randomly selected residents of his city.Teresa wants to estimate the mean amount of money spent on clothes per week by mall shoppers. She collects data from every 10th person entering a clothing store at the mall.Question 10Given that Cheryl is collecting data on car color, what type of data is she working with?Select the correct answer below:qualitativediscrete quantitativecontinuous quantitativenone of the aboveQuestion 11A company has developed a wristband for monitoring blood sugar levels without requiring direct blood samples. It is interested in demonstrating the accuracy of the device for governmental approval and has decided to test the claim “The glucose level reported by the wristband is within 10% of a standard blood test result.” Which of the following data collection processes would be appropriate? Select only one answer choice.Select the correct answer below:Choose a random sample of employees at lunchtime and measure their blood sugar using both the wristband and a standard blood test.Choose a random sample of people from the local area and random times throughout the day and measure their blood sugar using both the wristband and a standard blood test.Choose a random sample of people from the local area and random times and measure their blood sugar using the wristband. Choose another random sample of people and random times and measure their blood sugar using the standard blood test.Go to a hospital and have the doctors choose a random sample of patients to be tested at random times using both the wristband and the standard blood test.Question 12When considering different sampling methods, cluster sampling includes the steps: _______.Select the correct answer below:identify individuals of the population that are easily accessible; obtain data from these individualslist the members of the population; use simple random sampling to select a starting point in the population; let k = (number of individuals in the population)/(number of individuals needed in the sample); choose every kth individual in the list starting with the one that was randomly selecteddivide the population into groups; use simple random sampling to identify a proportionate number of individuals from each groupuse simple random sampling to select a set of groups; every individual in the chosen groups is included in the sampleQuestion 13Is the statement below true or false?Continuous is the type of quantitative data that is the result of measuring.Select the correct answer below:TrueFalseQuestion 14A regional airline service advertises that their average ticket price is $60. Given that their ticket prices are $14, $85, $94, and $107, why is this statistic misleading?Select the correct answer below:The statistic contains a calculation error.The sample is biased.The sample size is insufficient.The data contains an outlier.FEEDBACKContent attribution- Opens a dialogQuestion 15Gloria collected data from a random sample of 1200 students in her school district asking whether or not they read more than one book per month. Based on the results, she reports that 35% of the students in all state schools read more than one book per month. Why is this statistic misleading?Select the correct answer below:The data contains an outlier.The sample size is insufficient.The sample is biased.The statistic contains a calculation error.

Community Health SettingsPlease read chapter 29 and 30 of the c the

Community Health SettingsPlease read chapter 29 and 30 of the c the attached PowerPoint presentations. Once done answer the following questions;1. Discuss how Healthy People 2020 can be used to shape the care given in a school health setting. Give at least one example.2. Identify common health concerns of school-age children and associated health interventions.3. Describe the historical perspective of occupational health nursing.4. Describe a multidisciplinary approach for resolution of occupational health issuesPlease, present your assignment in an APA format word document, Arial 12 font. A minimum of 3 evidence-based references besides the class textbook are required. A minimum of 700 words is required.

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Question src=”/qa/attachment/8939896/” />(b) Compute Tukey’s HSD to analyze the significant main effect. The critical value is for each pairwise comparison. Summarize the results for this test ATTACHMENT PREVIEW Download attachment Capture.PNG

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Question please i need the answer for question 2 alt=”0624216F-3534-4762-A967-FF1BE62FB41B.jpeg” /> ATTACHMENT PREVIEW Download attachment 0624216F-3534-4762-A967-FF1BE62FB41B.jpeg 124] (a) Establish whether mean building costs estimated by the three estimators differ; if yes, do a follow-up analysis to determine which are the same and which differ. (Use a = 0.05). List all necessary assumptions effective. and indicate which might be suspect. Also test whether blocking is [3] ( b) RBD Compute the relative efficiency of Randomized Block Design over Completely Randomized Design. CR 2. In a test of the effectiveness of advertising on product perception, 30 subjects n = 30 were randomly assigned to five treatment groups. Each group then received a particular advertisement regarding a ball-point pen. The subjects were permitted to K = 5 test their pen and plausibility of the advertisement. The subjects were then asked to

In the 2013 Jerry’s Artaramaart supplies catalog, there are 560

Question In the 2013 Jerry’s Artaramaart supplies catalog, there are 560 page. 28 of the pages feature signature artists. Suppose we randomly sample 15 page. Let X= the number of pages that feature signature artists.

Need help on this part of the HW question ATTACHMENT

Question Need help on this part of the HW question ATTACHMENT PREVIEW Download attachment 6.PNG

I know how to fill in the table but I

Question I know how to fill in the table but I need help with the rest ATTACHMENT PREVIEW Download attachment image.jpg Table 1: Contingency Table Closing price movement from Tuesday to Wednesday Closing price up on Closing price not up Wednesday on Wednesday Total 119 151 Closing price up on 270 Tuesday Closing price movement from Monday to Tuesday 125 105 Closing price not up 230 on Tuesday Total 244 256 500 Table 2: Summary of the Hypothesis Test The type of test statistic: Chi square – Degrees of freedom: The value of the test statistic: Round your answer to at least two decimal places.) 0 The critical value for a test at the 0.10 level of significance: (Round your answer to at least two decimal places!) Can we conclude that there is an association between the variables closing price movement from Monday to Tuesday and closing price movement from Thesday to Wednesday! Use the 0.10 level of Yes No significance. X MacBook AirRead more

If we have two group means to compare, we use

Question If we have two group means to compare, we use a z or t test as we have seen, assuming we can meet the assumptions of a parametric test. If we have three or more group means to compare, we would have to do multiple z or t tests, but this is just not feasible, and multiple tests would increase our probability of type 1 error. So we use ANOVA. ANOVA uses the F ratio (a ratio of Variances) to inform us on any differences among group means. Discuss.How do you interpret the ANOVA table in Checkpoint 4?

Studies have shown that the onset of withdrawal is experienced

Question Studies have shown that the onset of withdrawal is experienced a mean of 40 hours after the last drink, with a standard deviation of 19 hours. A sample of 34 people who use alcohol excessively is to be taken. What is the probability that the sample mean time between the last drink and the onset of withdrawal will be 37.3 hours or less? Carry your intermediate computations to at least four decimal places. Round your answer to at least three decimal places.How the heck do i calculate this? probability has totally slipped my mind

So the researcher can use the range rule of thumb,

Get college assignment help at Smashing Essays Question So the researcher can use the range rule of thumb, which says that, to a rough approximation, σ is no bigger than range where range = max – min. If you have no other estimate  4for σ you can therefore use range as a rough estimate for σ  4as a rough estimate for σ we need to estimate the range of the number of kernels on an ear of the new experimental corn. An ordinary ear of corn has around 800 kernels. We don’t know how few or how many kernels each ear of the experimental corn will have, but at the very minimum it could have zero (if the new corn didn’t produce any kernels at all); and even if the new corn actually over-produces compared to existing corn (despite being grown in harsh conditions), it certainly isn’t going to overproduce by more than twice (since it’s going to be grown in harsh desert soil), so the maximum number of kernels can’t be larger than 1,600.Now, use your previously-computed value as an approximation for sigma, and compute how many ears of the experimental corn the researcher needs in the study. Don’t forget, the margin of error and confidence level have already been given to you in a previous problem

Suppose you have a sample size of 35 with a

Question Suppose you have a sample size of 35 with a mean 72 and a population standard deviation of 2.9. Based on this, construct a 95% confidence interval for the true population mean. Use z = 2 (rather than 1.96) for your calculations.

Suppose you have a sample size of 35 with a

Question Suppose you have a sample size of 35 with a mean 46 and a population standard deviation of 8.2. Based on this, construct a 99% confidence interval for the true population mean. As in the reading, in your calculations:–Use z = 1.645 for a 90% confidence interval–Use z = 2 for a 95% confidence interval–Use z = 2.576 for a 99% confidence interval.

Business StatisticThe following is the regression model to predict the

Question Business StatisticThe following is the regression model to predict the time taken for runners to complete a race.For ANOVA, sum of squares for regression, residual, and total is unknown. df for regression is unknown (X), df for residual is unknown (Y), and df for total is 79. Significance level is 0.05 The following is Coefficients. (Constant) for unstandardised coefficients is 10.02, recovery time for unstandardised coefficients is 1.15, reaction time for unstandardised coefficients is 1.27. The standard error and t-statistic test for (constant), recovery time, and reaction time is unknown. Significance level for (constant) is 0.004, recovery time is 0.003 and reaction time is 0.013. Calculate the sample size and the value of X and Y. Show clear workings. Based on your understanding of F-statistics, does not this model suggests that time taken has a strong relationship with the variables? Explain.What is the linear relationship equation and explain why there is no need to rerun the model at 5% significance level.

I need answers to number 4 ATTACHMENT PREVIEW Download attachment

Question I need answers to number 4 ATTACHMENT PREVIEW Download attachment Screen Shot 2019-07-31 at 11.13.22 PM.png 4. A survey was conducted to see if there was any association between how the number of hours spent studying before an exam and the grade the student got. The results were that the r value was 0.7 and that the average number of hours used for studying was 14 and the standard deviation was 2 hours and that the average grade was 70 and the standard deviation in their grade was 10. (a) Find R

I need answers to 33,34,35 and 36. ATTACHMENT PREVIEW Download

Question I need answers to 33,34,35 and 36. ATTACHMENT PREVIEW Download attachment Screen Shot 2019-07-31 at 11.26.57 PM.png 33. Dr. Symth was interested in students’ behavior following alcohol consumption. He observed students at bars and parties and studied the ways that students acted before and after consuming alcohol. Which research method did Dr. Symth utilize? A. Controlled experiment B. Case study C. double-blind experiment. D. Observational Experiment 34. A sample taken from the larger population in such a way as to give every member of the population has an equal chance of being chosen is called a: A Cluster Sample. B Convenience Sample. C Simple Random Sample. D Stratified Sample. E Good Sample 35. The main property of a simple random sample is:- A. The people that are picked for the sample are easy to choose. B. Every member of the population has an equal chance of being picked for the sample. C. The people in the sample don’t know if they are in the control or experiment group. D. The people in the sample choose themselves by simply volunteering. 36. A

I need answer to 1,2, and 3. ATTACHMENT PREVIEW Download

Question I need answer to 1,2, and 3. ATTACHMENT PREVIEW Download attachment Screen Shot 2019-07-31 at 11.26.01 PM.png 1. If the mean and the median of a sample are equal then. A. The sample is likely to be symmetrical in distribution. B. The standard deviation will equal the mean and median also C. The standard deviation will equal zero. D. None of the above is true. 2. The ages of ten students is 18 , 18, 18, 19, 21 , 23, 25, 28, 28 , 85. The best measure of the typical age of these students would be. A. Mean B. Mode C. Median D. Range 3. Which one of the following data is discrete? A. A survey where they record the time it takes to get to work.. B. A survey where they record the height of 50 students. C. A survey where they record the average temperature in a town during the month of August. D. A survey where they record the number of deaths in a town during the month of August.

We want to predict gender based on height and weight.

Question We want to predict gender based on height and weight. The training set consists of ATTACHMENT PREVIEW Download attachment 2.png 2. (20 Points) For each of the following two classification problems, write down whether one should prefer LDA or logistic regression, and explain why: a. (10 Points) We want to predict gender based on height and weight. The training set consists of heights and weights for 82 men and 63 women. b. (10 Points) We want to predict gender based on annual income and weekly working hours. The training set consists of annual income and weekly working hours for 770 men and 820 women.

Is there a reason my t statistic is coming out

Question Is there a reason my t statistic is coming out negative? Is there a certain order I do the means in the calculation?

Our goal is to approximate y as (linear regression)Provide the

Question Our goal is to approximate y as (linear regression)Provide the equation which gives the value ATTACHMENT PREVIEW Download attachment 4.png 4. (20%) Consider the following data containing 4 training data points consisting of two features x1 and 962 (so here N = 4, p = 2): Training Data #1 #2 #3 #4 X1 Feature 1) 2 1 3 4 _— Our goal is to approximate y as (linear regression). y :3 50 51961 32962 a) (15 Points) Provide the equation which gives the values of fig, 5 1, 5;. Provide the values 50, ,8 1, 5 2. b) (5 Points) Find the mean squared error (MSE) for the training data.

Our goal is to use LDA to obtain a classifierObtain

Question Our goal is to use LDA to obtain a classifierObtain the two discriminant functionsCheck that all the training points ATTACHMENT PREVIEW Download attachment 5.png 5. (15%) Consider the following data containing 5 training data points consisting of two features x1 and x2 (so here N = 5, p = 2), and two possible classes y E {0, 1 }. Training Data #1 # 2 #3 #4 #5 X1 (Feature 1) O 2 2 X2(Feature 2) O O 2 y O O O Our goal is to use LDA to obtain a classifier. a) (10 Points) Obtain the two discriminant functions do(x) and S1(x). b) (5 Points) Check that all the training points are classified correctly using the obtained discriminant functions do(x) and S1(x)

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