1) What do you do, if the p-value in your hypothesis test is equal to 0.0002?

The decision depends on the probability of Type I Error we are ready to tolerate

O Do not reject the null hypothesis

O Reject the null hypothesis

O Reformulate the alternative hypothesis

Select the level of significance in order to accept the alternative hypothesis

2) Researchers used the simple linear regression model to study the relationship between social media screen time

during a week and end-of-week quiz results. As one of the researchers, find the predicted quiz score if a student

spends 26.87 hours during the next week using social media. Use the data in the table below to build the

estimated regression equation and then use this equation to find the predicted quiz score:

Social media weekly time, hours

Quiz results, out of 100

14.5 76.8

3.7. 98.45

30.4. 57.6

34.23. 45.5

2.7. 74.78

16.8. 75.7

13.6. 93.67

4.7. 57.8

20.6. 35.7

4.9. 94.8

Round your answer to 2 decimals.

ANS. 56.09

3)Would you accept the alternative hypothesis (in a left tail test), if the probability of Type I Error is 5% and the p-

value is equal to 0.0922?

O No

O Yes

O Depends on the confidence interval

O This is subject to management approval

O This is subject to the needs of marketing goals

4)Consider the following hypotheses statement for the proportion of defective parts produced by a machine: Ho : p 2

0.3072, Ha: p < 0.3072. A sample consisting of 40 parts showed the proportion 0.4412. What is the test statistic?

Round your answer to 4 decimal places.

ANS. 1.837

CHECK IF MY ANSWERS ARE RIGHT