Author Question: If r = zero, then . a. 0.=sY X b. 1.00.= +sY X c. sY .X = sY d. sY .X cannot be ... (Read 61 times)

imanialler

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  • Posts: 539
If r = zero, then .
 
  a. 0.=sY X
 b. 1.00.= +sY X
 c. sY .X = sY
 d.
  sY .X cannot be calculated

Question 2

True or False: In a hypothesis test regarding a population mean, the probability of a type II error, , depends on the true value of the population mean.
 
  A) False B) True

Question 3

True or False: In a hypothesis test, an increase in  will cause a decrease in the power of the test provided the sample size is kept fixed.
 
  A) False B) True

Question 4

A nationwide study of American homeowners revealed that 64 have one or more lawn mowers.
 
  A lawn equipment manufacturer, located in Omaha, feels the estimate is too low for households in Omaha. Can the value 0.64 be rejected if a survey of 490 homes in Omaha yields 331 with one or more lawn mowers? Use

Question 5

An article in a journal reports that 34 of American fathers take no responsibility for child care.
 
  A researcher claims that the figure is higher for fathers in the town of Littleton. A random sample of 234 fathers from Littleton yielded 96 who did not help with child care. Test the researcher's claim at the 0.05 significance level.

Question 6

In a hypothesis test, which of the following will cause a decrease in , the probability of making a type II error?
 
  A: Increasing  while keeping the sample size n, fixed
  B: Increasing the sample size n, while keeping  fixed
  C: Decreasing  while keeping the sample size n, fixed
  D: Decreasing the sample size n, while keeping  fixed
  A) C and D B) A and D C) B and C D) A and B



juiceman1987

  • Sr. Member
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  • Posts: 316
Answer to Question 1

C

Answer to Question 2

Thanks for the answer, I sent you a forum message for another one.

Answer to Question 3

Thanks for the answer, I sent you a forum message for another one.

Answer to Question 4

OMG..This is soo helpful. Thank you.

Answer to Question 5

Saved me massive time.

Answer to Question 6

D



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