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Statistical Analysis Lesson 7 Q11-40

  • Date Submitted: 09/06/2016 12:21 AM
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Statistical Analysis Lesson 7 q11-40
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Online Exam 8_07

Question 11 of 40
2.5 Points
A study of a brand of “in the shell peanuts” gives the following results:

A significant event at the 0.01 level is a fan getting a bag with how many peanuts?

  A. 30 peanuts
  B. 25 or 30 peanuts
  C. 25 or 55 peanuts
  D. 25 peanuts

Question 12 of 40
2.5 Points
A skeptical paranormal researcher claims that the proportion of Americans that have seen a UFO is less than 1 in every one thousand. State the null hypothesis and the alternative hypothesis for a test of significance.

  A.
H0: p = 0.001     Ha: p > 0.001

  B.
H0: p = 0.001       Ha: p < 0.001

  C.
H0: p > 0.001     Ha: p = 0.001

  D.
H0: p < 0.001     Ha: p = 0.001

Question 13 of 40
2.5 Points
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.

Question 14 of 40
2.5 Points
The principal of a middle school claims that annual incomes of the families of the seventh-graders at his school vary more than the annual incomes of the families of the seventh-graders at a neighboring school, which have variation described by s = $13,700. 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...

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