A random sample of 22 Midtown residents in Atlanta has been selected to be studied for their expenditure on theater tickets. The mean of spending for this group is $135 with a standard deviation of $39. The mean value of ticket expenditure in Atlanta that has been recorded for the past decade is $120.

Discuss the below points:

1. What is the null hypothesis in this assignment?

2. What is the alternative hypothesis in this assignment?

3. Calculate the standard error of the mean for the study above.

4. Create a confidence interval for the man value (confidence level 95%).