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A random sample of 16 students selected from the student body of a large university had...

A random sample of 16 students selected from the student body of a large university had an average age of 25 years and a standard deviation of 2 years. We want to determine if the average age of all the students at the university is significantly more than 24. Assume the distribution of the population of ages is normal. Use α = 0.01.

10. The test statistic is

a. 1.96

b. 2.00

c. 1.645

d. 0.05

11. The critical value is

a. 2.330

b. 2.583

c. 2.602

d. 2.921

e. 2.947

12. At the 1% level, you

a. fail to reject the null hypothesis

b. reject the null hypothesis

13. The practice of concluding “do not reject H0” is preferred over “accept H0” when we

a. are conducting a one-tailed test

b. are testing the validity of a claim

c. have an insufficient sample size

d. have not controlled for the Type II error

Math   Statistics-And-Probability   
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