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Author Question: It is known that the population variance (2) is 144 . At 95 confidence, what sample size should be ... (Read 55 times)

bobypop

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on: Jun 24, 2018
It is known that the population variance (2) is 144 . At 95 confidence, what sample size should be taken so that the margin of error does not exceed 5?
 a. 22
   b. 23
   c. 24
   d. 25

Question 2

Setting the upper and lower control limits in a control chart farther from the center line results in a
 a. lower probability of a Type I error.
 b. lower probability of a Type II error.
 c. lower probability of both a Type I and Type II error.
  d. higher probability of both a Type I and Type II error.


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cloud

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

b

Answer to Question 2

b


bobypop

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Reply 2 on: Jun 24, 2018
Gracias!

frankwu0507

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

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