Maurice Tutor

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    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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    Oct-2001 - Nov-2016

Category > Management Posted 22 Jan 2018 My Price 7.00

Dancers’ Heights

Dancers’ Heights Using the data from Exercise 9.46 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 9.46) and had done a test with a significance level of 0.05, would you have rejected a hypothesized mean of 64.5 inches?

 

Exercise 9.46

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.

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.

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Maurice Tutor
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Status NEW Posted 22 Jan 2018 06:01 PM My Price 7.00

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