QUESTION 1

1. A bartender wants to know whether turning the music up louder will have an effect on how much his patrons drink.

He has run the bar for years, and he knows that he sells, on average, 523 drinks/night. For the next 30 nights, he turns up the music louder and finds an average of 560 drinks/night with a sample standard deviation of 82 drinks/night.

QUESTIONS 2-13 apply to this scenario

QUESTION 2

1. State the Null Hypothesis

QUESTION 3

1. State the Alternative Hypothesis

QUESTION 4

1. Using a 0.05 level of significance, what are the d.f.? ______

QUESTION 5

1. Using a 0.05 level of significance, what is the t-critical value? _______

QUESTION 6

1. Using a 0.05 level of significance, what is the calculated test statistic (t)? _______

QUESTION 7

1. Please submit your rough work from calculating your t-value - ( from previous question #6).
2. Attach File

QUESTION 8

1. At a 0.05 level of significance, based on your calculation, do we accept or reject the null? QUESTION 9
2. Now, using a 0.01 level of significance, what is the t-critical value? _______

QUESTION 10

1. Please submit your rough work from making this decision - ( from previous question #9).

QUESTION 11

1. Therefore at a 0.01 level of significance, based on your calculation, do we accept or reject the null? QUESTION 12
2. If we had found a sample mean of 550 drinks/night (and the same standard deviation of 82), t-critical would be, d.f. would be, and the calculated test statistic (t) is. (assume 0.05 still)

QUESTION 13

Using the new sample mean at a 0.05 level of significance, based on your calculation, do we accept or reject the null?