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Author Question: Suppose a 95 confidence interval for p, the proportion of drivers who admit that they sometimes run ... (Read 92 times)

washai

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on: Jul 24, 2018
Suppose a 95 confidence interval for p, the proportion of drivers who admit that they sometimes run red lights when no one is around, is 0.29 to 0.38 . Which of the following statements is false?
 a. A test of H0: p = 0.3 versus Ha: p  0.3 would not be rejected using  = 0.05.
  b. A test of H0: p = 0.5 versus Ha: p  0.5 would be rejected using  = 0.05.
  c. It is plausible that about 37 of all drivers would admit that they sometimes run red lights when no one is around.
  d. It is plausible that a majority of all drivers would admit that they sometimes run red lights when no one is around.

Question 2

What are the degrees of freedom for the t-distribution?


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jonathanballen97

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Reply #1 on: Jul 24, 2018
Answer to Question 1

D

Answer to Question 2

24


washai

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Reply 2 on: Jul 24, 2018
Great answer, keep it coming :)

matt95

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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