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Author Question: In hypothesis testing, a Type 2 error occurs when a. the null hypothesis is not rejected when the ... (Read 1450 times)

littleanan

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on: Jul 24, 2018
In hypothesis testing, a Type 2 error occurs when
 a. the null hypothesis is not rejected when the null hypothesis is true.
  b. the null hypothesis is rejected when the null hypothesis is true.
  c. the null hypothesis is not rejected when the alternative hypothesis is true.
  d. the null hypothesis is rejected when the alternative hypothesis is true.

Question 2

Items produced by a certain process are supposed to weigh 90 grams. However, the process is such that there is variability in the items produced and they do not all weigh exactly 90 grams. The distribution of weights is normal with a mean of 89.8 grams and a standard deviation of 1.1 gram. Suppose we sample one of these items. What is the probability that it weighs more than 91 grams?


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al

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

C

Answer to Question 2

0.1377


littleanan

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

komodo7

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Reply 3 on: Yesterday
Wow, this really help

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