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Author Question: In one town, monthly incomes for men with college degrees are found to have a standard deviation of ... (Read 210 times)

piesebel

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on: Aug 1, 2018
In one town, monthly incomes for men with college degrees are found to have a standard deviation of 650.
 
  Use a 0.01 significance level to test the claim that for men without college degrees in that town, incomes have a higher standard deviation. A random sample of 22 men without college degrees resulted in incomes with a standard deviation of 977.

Question 2

Rolling a single loaded die 50 times, keeping track of the fives rolled.
 
  A) Procedure results in a binomial distribution.
  B) Not binomial: the probability p does not remain constant for each trial.
  C) Not binomial: there are more than two outcomes for each trial.
  D) Not binomial: the trials are not independent.


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wuly

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

Test statistic: X2 = 47.444. Critical values: X2 = 38.932. Reject . There is sufficient evidence to support the claim that incomes of men without college degrees have a standard deviation greater than 650.

Answer to Question 2

A


piesebel

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Reply 2 on: Aug 1, 2018
Gracias!

ebonylittles

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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