Entries by Hannah Wangui

mean

Question HI. I need help with the example below:An engineer in charge of a production process that produces a stain for outdoor decks has designed a study to test the research hypotheses that an additive to the stain will produce an increase in the ability of the stain to resist water absorption. The mean absorption […]

 

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probability

Question Hi. I need help with the following example and how to demonstrate the solution.A college admissions officer for the school’s online undergraduate program wants to estimate the mean age of its graduating students. The administrator took a random sample of 40 from which the mean was 24 years and the standard deviation was 1.7 years.  […]

 

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confidence interval

Question Given Ho: p = 0.7 vs. H1: p is not 0.7I calculated a 95% confidence interval for p and it was (0.4, 0.75). Would the p value be less than 0.05?Suppose you used 5% significance level to make decision. Now, based on your decision, which on of the below sentence is correct, explain why […]

 

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data

Question Hi. I could use some help on the following:A dealer in recycled paper places empty trailers at various sites. The trailers are gradually filled by individuals who bring in old newspapers and magazines, and are picked up on several schedules. One such schedule involves pickup every second week. This schedule is desirable if the […]

 

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