What is the sample mean, Some people claim that the

What is the sample mean

Reference no: EM131796664

Dancers' Heights

Using the data from Exercise on dancers' heights, find a 95% confidence interval for the mean height.

Also, if you had used a two-sided alternative (Instead of the one-sided alternative used in Exercise ) and had done a test with a significance level of 0.05, would you have rejected a hypothesized mean of 64.5 inches?

Exercise

Dancers' Heights A random sample of 20 independent female college-aged dancers was obtained, and their heights (in inches) were measured. Assume the population distribution is Normal.

644_Dancers Heights.png

a. What is the sample mean? Is it above or below 64.5 inches?

b. Some people claim that the physical demands on dancers are such that dancers tend to be shorter than the typical person in the population.

Use the four-step procedure to test the hypothesis that dancers have a smaller population mean height than 64.5 inches. Use a significance level of 0.05.

Reference no: EM131796664

Questions Cloud

Determine power input and the air-gap power : The friction and windage loss is 3% of the power developed. If the motor speed is 1120 rpm, determine (a) power input, (b) the stator Cu-loss

What is the human resource development process : Why would investors be interested in a firm's future marketing plans? What is the human resource development process?

Legal duty to do is not adequate consideration : A promise to do what one already has a legal duty to do is not adequate consideration.

What is her tentative minimum tax in each of the alternative : In 2013, Juanita is married and files a joint tax return with her husband. What is her tentative minimum tax in each of the alternative circumstances?

What is the sample mean : Some people claim that the physical demands on dancers are such that dancers tend to be shorter than the typical person in the population.

Majority of the sample : What is the probability that the majority of the sample will be pro 134? (Majority means strictly more than half.)

How much does the firm have in merchandise inventory : how much does the firm have in Merchandise Inventory, If the only current assets shown on the balance sheet for Arch Company are Cash

What is reconciled cash balance that should on balance sheet : A company shows a cash balance in their account of $851. What is the reconciled cash balance that should be on the company's balance sheet as of October 31st.

At what cost of capital should newton purchase the crusher : Newton Rock Co is considering the purchase of a new rock crusher. This new machine will allow Newton to receive new cash flows of $20,000 per year.

User Account

All Pages