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Author Question: Heights of college women have a distribution that can be approximated by a normal curve with a mean ... (Read 201 times)

Capo

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on: Jul 24, 2018
Heights of college women have a distribution that can be approximated by a normal curve with a mean of 65 inches and a standard deviation equal to 3 inches. About what proportion of college women are between 65 and 67 inches tall?
 a. 0.75
  b. 0.50
  c. 0.25
  d. 0.17

Question 2

A CBS News poll taken in January 2010 asked a random sample of 1,090 adults in the US Do you think the federal government is adequately prepared to deal with a major earthquake in the United States, or not? A 95 confidence interval for the proportion of the population that thinks the government is prepared is .31 to .37 . Based on this result, which one of the following statements is false?
 a. It is reasonable to say that a majority of adults in the US think the federal government is prepared to deal with a major earthquake.
  b. It is reasonable to say that fewer than half of adults in the US think the federal government is prepared to deal with a major earthquake.
  c. It is possible that approximately 35 of adults in the US think the federal government is prepared to deal with a major earthquake.
  d. A 99 confidence interval for the proportion of the population that thinks the government is prepared would be wider than the 95 confidence interval given above.


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bfulkerson77

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

C

Answer to Question 2

A


Capo

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Reply 2 on: Jul 24, 2018
Thanks for the timely response, appreciate it

tranoy

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Reply 3 on: Yesterday
Gracias!

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