Entries by Grace Wahito

Use technology and a t-test to test the claim about the population

February 28, 2020 in /by

Use technology and a t-test to test the claim about the population mean μat the given level of significance α using the given sample statistics. Assume the population is normally distributed. Claim: μ>76  α=0.05 Sample Statistics: x=77.5 ,s=3.2,n=29 What are the null and alternativehypotheses? Choose the correct answer below.A. H0:μ≥76 HA:μ<76B. H0:μ≤76 HA:μ>76C. H0:μ=76 HA:μ≠76D. H0:μ≠76 HA:μ=76 What is […]

 

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The time spent(in days) waiting for a heart transplant for people ages 35-49

February 28, 2020 in /by

The time spent(in days) waiting for a heart transplant for people ages 35-49 can be approximated by the normal distribution, as shown in the figure to the right. (a) What waiting time represents the 1414th percentile? (b) What waiting time represents the third quartile? days 100 200 300 u=200 s=25.8   Looking for a Similar Assignment? Order […]

 

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9) The total cholesterol levels of a sample of men aged 35-44 are normally distributed

February 28, 2020 in /by

9)  The total cholesterol levels of a sample of men aged 35-44 are normally distributed with a mean of  211 milligrams per deciliter and a standard deviation of 38.3 milligrams per deciliter. (a) What percent of the men have a total cholesterol level less than 237 milligrams per deciliter of blood? (b) If 250 men in the 35-44 age group are randomly selected, about […]

 

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The accompanying data are the length (in centimeters) and girths (in centimeters)

February 28, 2020 in /by

The accompanying data are the length (in centimeters) and girths (in centimeters) of  12 harbor seals. Find the equation of the regression line. Then construct a scatter plot of the data and draw the regression line. Then use the regression equation to predict the value of y for each of the given x-values, if meaningful. If the x-value is not […]

 

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