Question

A researcher collated data on Americans’ leisure time activities. She found the mean number of hours spent watching television each weekday to be 2.7 hours with a standard deviation of 0.2 hours. Jonathan believes that his football team buddies watch less television than the average American. He gathered data from 40 football teammates and found the mean to be 2.3. Which of the following are the correct null and alternate hypotheses?

Answer 1

The answer is: 

(null hypothesis) u=2.7; Ha(alt hypothesis): u<2.7 

Answer 2

Answer:

Step-by-step explanation:

Given that a researcher collected data on Americans leisure activities.  Mean number of hours spent watching TV X is having mean 2.7 and std deviation 0.2.

Sample size = 40

Sample mean = 2.3

To test the hypothesis

Null hypothesis should be mu =2.7

and alternate hypothesis should be mu <2.7

We compare sample mean with population mean.