Question Details

A student believes that the average grade on the statistics 



1.Identify the null and alternative hypotheses for the following problems.

a.	The manager of a restaurant believes that it takes a customer less than or equal to 25 minutes to eat lunch.
b.	Economists have stated that the marginal propensity to consume is at least 90¢ out of every dollar.
c.	It has been stated that 75 out of every 100 people who go to the movies on Saturday night buy popcorn.


2.	A student believes that the average grade on the statistics final examination was 87. A sample of 36 final examinations was taken. The average grade in the sample was 83.96 with a standard deviation of 12.

a.	State the null and alternative hypotheses.
b.	Using the critical value approach, test the hypotheses at the 5% level of significance.
c.	Using the p-value approach, test the hypotheses at the 5% level of significance.





Math Assignment Help, Math Homework help, Math Study Help, Math Course Help