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 17 times)

imanialler

  • Hero Member
  • *****
  • 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
  • ****
  • 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



Need homework help now?

Ask unlimited questions for free

Ask a Question


 

Did you know?

If you use artificial sweeteners, such as cyclamates, your eyes may be more sensitive to light. Other factors that will make your eyes more sensitive to light include use of antibiotics, oral contraceptives, hypertension medications, diuretics, and antidiabetic medications.

Did you know?

There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

Did you know?

The top five reasons that children stay home from school are as follows: colds, stomach flu (gastroenteritis), ear infection (otitis media), pink eye (conjunctivitis), and sore throat.

Did you know?

Walt Disney helped combat malaria by making an animated film in 1943 called The Winged Scourge. This short film starred the seven dwarfs and taught children that mosquitos transmit malaria, which is a very bad disease. It advocated the killing of mosquitos to stop the disease.

Did you know?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

For a complete list of videos, visit our video library