In 2005 the average gpa for students was 315 a sample in

Reference no: EM13602884

1. In 2005, the average GPA for students was 3.15. A sample in 2008 showed that the average GPA for students was 3.46. An alternative hypothesis for GPA of students is:

A.The mean GPA is more than 3.15 and less than 3.46

B.The mean GPA is less than 3.46

C.The mean GPA has increased to more than 3.15

D.None of the above

2. The correlation between two variables is +0.8 for a sample of 10 observations. We wish to show there is a positive relationship between the two variables. Which of the following is a correct statement of the null hypothesis and the alternate hypothesis (H0 = null hypothesis and Ha = alternative hypothesis)?

A.H0: p = 0, HA: p > 0

B.H0: p = 0, HA: p is not equal to 0

C.H0: p = 0, HA: p < 0

D.Depends on the level of significance

3. The following results were obtained as part of a simple linear regression analysis. The regression equation is Y = 37.28-1.22X. For each unit change in X, the change in Y is

A.-1.22

B.0.78

C.37.28

D.38.50

E.none of the above

Reference no: EM13602884

Questions Cloud

The net contents in ounces of canned soup is a random : the net contents in ounces of canned soup is a random varialbe with probability distribution fx 4x-11.75 11.75 lt x lt

A10 x 10-9 c charge is at the origin and a -100 x 10-9 c : a 1.0 x 10-9 c charge is at the origin and a -1.00 x 10-9 c charge is 4.1 m to the right on the positive x-axis. the

Kenneth change recently started a business during the : kenneth change recently started a business. during the first few days of operation mr. chang transferred 30000 from his

In 1910 rutherford performed a classic experiment in which : in 1910 rutherford performed a classic experiment in which he directed a beam of alpha particles at a thin gold foil.

In 2005 the average gpa for students was 315 a sample in : 1. in 2005 the average gpa for students was 3.15. a sample in 2008 showed that the average gpa for students was 3.46.

Ceradyne projects its factory rent to be 6000 in august : ceradyne projects its factory rent to be 6000 in august when 8600 units are expected to be produced. if rent is a

Soner company has had a net income of 6100 3600 10000 and : sooner company has had a net income of 6100 3600 10000 and 9900 over the first four years of the companys existence. if

A medical researcher contends that lung capacity varies : 1. a medical researcher contends that lung capacity varies significantly between smokers and nonsmokers. the mean

Assume that logan company uses a periodic inventory system : assume that logan company uses a periodic inventory system and has these account balances purchases 404000 purchase

User Account

All Pages