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Author Question: At the = 0.05 significance level test the claim that a population has a standard deviation of 20.3. ... (Read 55 times)

WWatsford

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on: Aug 1, 2018
At the  = 0.05 significance level test the claim that a population has a standard deviation of 20.3. A random sample of 18 people yields a standard deviation of 27.1.
 
  What will be an ideal response?

Question 2

How many ways can 6 people be chosen and arranged in a straight line if there are 8 people to choose from?
 
  A) 48 B) 40,320 C) 20,160 D) 720


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kristenb95

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Reply #1 on: Aug 1, 2018
Answer to Question 1

Test statistic: X2 = 30.297. Critical values: X2 = 7.564, 30.191. Reject the null hypothesis. There is sufficient evidence to warrant rejection of the claim that the standard deviation of the population is equal to 20.3.

Answer to Question 2

C


WWatsford

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Reply 2 on: Aug 1, 2018
Great answer, keep it coming :)

marict

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

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