Question

1. A general manager for a professional baseball team is planning some bobble head nights for a promotional give away for the first 20,000 fans. However, he wants to know if it can increase the fan base on game nights. The team currently has about 25,000 fans each night on weekends. At the .05 level of significance, does the promotion increase ticket sales that exceed last years levels?

   Bobble Head Night: Sample size of 8 with a mean of 39.3 and Sample standard deviation of 14.9

   Last Year’s Attendance on Promotions nights:   Sample size of 8 with a mean of 21.75 and Sample standard deviation of 5.87

   Select the correct H1 (HA)

   		Bobble head night attendance greater than or equal to attendance last year
   		Bobble head night attendance less than or equal to attendance last year.
   		Bobble head night attendance greater than attendance last year.
   		Bobble head night attendance less than attendance last year

Answer 1

Answer: Bobble head night attendance greater than attendance last year.

Explanation:

This corresponds to one-sided (Right Tailed) t-test for difference in two means.

Since, the null hypothesis is the hypothesis of No Difference and the Alternative Hypothesis is the complement of the Null Hypothnesis which represents our claim.

Here, we are interested in testing whether the mean sales of ticket for current year exceeds the mean sales of tickets for previous year i.e

So, the alternative hypothesis, Ha: The mean sales of ticket for current year exceeds the mean sales of tickets for previous year i.e