The average retirement age in America is 64 years old. Do small business owners retire at a younger average age? The data below shows the results of a survey of small business owners who have recently retired. Assume that the distribution of the population is normal. 63, 54, 69, 69, 53, 53, 71, 51, 61, 60, 69, 54 What can be concluded at the the a = 0.01 significance level What is the test statistic and the p value?

kshe The height of women ages 20-29 is normally distributed, with a mean of 64.6 inches. Assume o = 2.9 inches. Are you more likely to randomly select 1 woman with a e score les (fo height less than 66.4 inches or are you more likely to select a sample of 30 women with a mean height less than 66.4 inches? Explain. E . Click the icon to view page 1 of the standard normal table. signme ee score A Click the icon to view page 2 of the standard normal table. radeboc What is the probability of randomly selecting 1 woman with a height less than 66.4 inches? e score mail O (Round to four decimal places as needed.) What is the probability of selecting a sample of 30 women with a mean height less than 66.4 inches? Text (Round to four decimal places as needed.) Accessibl Resource Are you more likely to randomly select 1 woman with a height less than 66.4 inches or are you more likely to select a sample of 30 women with a mean height less than 66.4 inches? Choose the correct answer below. Tools…

Just part B please

Help please week 12

Find the test statistic Find critical value Is there sufficient evidence to conclude that there is a difference in the mean rating of the pens following exposure to five advertisements? Is there significant evidence that Ad A and Ad B differ in mean ratings? Is there significant evidence that Ad A and Ad C differ in mean ratings? Is there significant evidence that Ad A and Ad D differ in mean ratings? Is there significant evidence that Ad A and Ad E differ in mean ratings? Is there significant evidence that Ad B and Ad C differ in mean ratings? Is there significant evidence that Ad B and Ad D differ in mean ratings? Is there significant evidence that Ad B and Ad E differ in mean ratings? Is there significant evidence that Ad C and Ad D differ in mean ratings? Is there significant evidence that Ad C and Ad E differ in mean ratings? Is there significant evidence that Ad D and Ad E differ in mean ratings? At the 0.01 level of significance, is there evidence of a difference in the…

What are the population parameters? Pick one:          The difference in the sample sizes           The difference in the two sample means           The mean time spent for all test-takers before and after tutoring           The mean time spent for all test-takers before and after tutoring combined   Does sufficient or insufficient evidence exist?

Performing a statistical analysis on managers and employees, and we need to determine whether the data is "significant" enough to consider the two groups to have different levels of desirability. How is the level of significance, p = 0.05, set?

Mean = 64.57 median = 64.50 mode = 64.09 comment on the shape of the distribution. Give reasons for your answer.

The data below give the wait time in seconds for a random sample of callers when calling a local pizza restaurant. {66, 37, 4, 47, 12, 16, 62, 12, 21, 25, 49, 3} a. What is the point estimate for the average wait time for callers? b. Verify conditions for using this sample to predict population mean of wait times. Estimate the mean wait time for all callers to this restaurant, with 90% confidence. Write your answer as a sentence. C. d. Estimate the standard deviation of wait times for all callers to this restaurant, with 90% confidence. Write your answer as a sentence. (You do not need to check requirements.)

Sample(Prefers) 7. 6 5 3. 2. -1 -0.5 0 0.5 1.5 Sample(IAT-Weight-Score) A. Do the boxplots suggest that the samples come from populations with different means? Briefly explain.