According to a recent major survey 70 of the

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Question 8   (4 points) According to a recent major survey, 70% of the respondents indicated that there is too much violence on TV. For a  random sample of 40 people, what is the 95% confidence interval of the proportion of people who feel that there is  too much violence on TV?  Student response: Percent Value Correct Response Student Response Answer Choices 0.0% a. .70  ±  .12 0.0% b. .70  ± .03 0.0% c. .70  ± .90 100.0% d. .70  ± .14 0.0% e. .70  ±  .07 Score: 4 / 4   Question 9   (4 points) Alpha ( ) is the probability that the test statistic wou α ld assume a value as or more extreme than the observed value  of the test.  Student response: Percent Value Correct Response Student Response Answer Choices 0.0% 100.0% Score: 4 / 4   Question 10   (4 points) The following list represents a sample of the ages of the soldiers enlisting in the military: 19, 22, 23, 19, 21, 22, 19,  23, 21. Assume that the population standard deviation is known to be 2 years. Construct a 99% confidence interval  for the average age of the soldier enlisting in the military. 
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Student response: Percent Value Correct Response Student Response Answer Choices 0.0% 0.0% 0.0% 100.0% 0.0% Score: 4 / 4   Question 11   (4 points) If a one-sided null hypothesis for a single mean cannot be rejected at a given significance level, then the  corresponding two-sided null hypothesis (i.e., the same sample size, the same standard deviation, and the same  mean) will_________ be rejected at the same significance level.  Student response: Percent Value Correct Response Student Response Answer Choices 0.0% 0.0% 100.0% Score: 0 / 4   Question 12   (4 points) The null hypothesis always includes an equal (=) sign.  Student response: Percent Value Correct Response Student Response Answer Choices 100.0% a. True 0.0% b. False Score: 0 / 4   Question 13   (4 points) The average waiting time per customer at a fast food restaurant has been 7.5 minutes. The customer waiting time  has a normal distribution. The manager claims that the use of a new cashier system will decrease the average  customer waiting time in the store. A random sample of 12 customer transactions has been recorded. At a 
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significance level of .05, what is the rejection point condition? We would reject the null hypothesis if:  Student response: Percent Value
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Christopher Reinemann
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