Statistics Questions

Question 1

2.5 Points z = 1.8 for Ha: µ > claimed value. What is the P-value for the test? ?

A. 0.9641 B. 3.59 C. 96.41 D. 0.0359

2. Question   2.5 Points

A consumer advocacy group claims that the mean amount of juice in a 16 ounce bottled drink is not 16 ounces, as stated by the bottler. Determine the null and alternative hypotheses for the test described. A. H0: µ = 16 ounces Ha: µ < 16 ounces B. H0: µ ¹ 16 ounces Ha: µ = 16 ounces C. H0: µ = 16 ounces Ha: µ > 16 ounces D. H0: µ = 16 ounces Ha: µ ¹ 16 ounces

3. A long-distance telephone company claims that the mean duration of long-distance telephone calls originating in one town was greater than 9.4 minutes, which is the average for the state. Determine the conclusion of the hypothesis test assuming that the results of the sampling do not lead to rejection of the null hypothesis.

A. Conclusion: Support the claim that the mean is less than 9.4 minutes. B. Conclusion: Support the claim that the mean is greater than 9.4 minutes. C. Conclusion: Support the claim that the mean is equal to 9.4 minutes. D. Conclusion: Do not support the claim that the mean is greater than 9.4 minutes

4. The owner of a football team claims that the average attendance at home games is over 4000, and he is therefore justified in moving the team to a city with a larger stadium. Assume that a hypothesis test of the claim has been conducted and that the conclusion of the test was to reject the null hypothesis. Identify the population to which the results of the test apply.

A. All games played by the team in question in which the attendance is over 4000 B. All future home games to be played by the team in question C. All home games played by the team in question D. None of the populations given are appropriate

Question 5 2.5 Point

In 1990, the average duration of long-distance telephone calls originating in one town was 9.3 minutes. A long-distance telephone company wants to perform a hypothesis test to determine whether the average duration of long-distance phone calls has changed from the 1990 mean of 9.3 minutes. Formulate the null and alternative hypotheses for the study described.

A. Ho: µ = 9.3 minutes H a : µ < 9.3 minutes B. Ho: µ = 9.3 minutes H a : µ > 9.3 minutes C. Ho: µ = 9.3 minutes H a : µ ¹ 9.3 minutes D. Ho: µ ¹ 9.3 minutes H a : µ = 9.3 minutes