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Two or More Sample Hypothesis Testing

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I Completed the first half, but I am struggling with the questions below. They are multiple choice.

Objective: Apply hypothesis testing to different populations and samples in business research situations.

5. One characteristic of any Student's t distribution is

a. It is right skewed.
b. As n increases, the t-distribution approaches a uniform distribution.
c. It is described by its degrees of freedom.
d. It has a mean of 0 and a standard deviation of 1.

Objective: Perform a hypothesis test of two population means using the standard normal distribution.

6. One hundred women were polled and 60 reported successfully communicating an automobile problem to the auto repairman. A sample of 150 men had 95 reporting the same success. The value of the test statistic for a test of the equality of proportions is

a. -0.5319
b. 0.7293
c. -0.419
d. 0.2702

Objective: Determine when to use an ANOVA for managerial decisions.

8. A balanced experiment requires that the sample size for each treatment be equal.

a. True
b. False

Objective: Perform an ANOVA.

9. If you have 4 factors (call them A, B, C and D) in an ANOVA experiment with replication you could have 4 different two-factor interactions.

a. True
b. False

Please help. . . Thank you!

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