« previous next »

Author Question: Which of the following might one do in order to increase the power of a z test? a. Increase the ... (Read 80 times)

kaid0807

  • Hero Member
  • *****
  • Posts: 515
on: Jun 20, 2018
Which of the following might one do in order to increase the power of a z test?
 
  a. Increase the sample size.
  b. Use a two-tailed test.
  c. Decrease sample size.
  d. None of the above.

Question 2

A researcher is interested in whether high school students who play sports have a higher or lower body mass index (BMI) than students in the general population. The researcher is unsure whether playing sports will decrease body mass (due to more calories burned) or increase body mass (due to more muscle mass). He compares their average body mass index to that of students in the general population and finds that zobt = +1.92 . This is a _____ test and the researcher should conclude _____.
 
  a. one-tailed; that students who are athletes have significantly higher BMIs
  b. two-tailed; that students who are athletes have significantly higher BMIs
  c. one-tailed; that students who are athletes do not have significantly higher BMIs
  d. two-tailed; that students who are athletes do not have significantly higher BMIs


jonathanballen97

  • Sr. Member
  • ****
  • Posts: 347
Reply #1 on: Jun 20, 2018
Answer to Question 1

a

Answer to Question 2

d


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

More than 30% of American adults, and about 12% of children utilize health care approaches that were developed outside of conventional medicine.

Did you know?

Methicillin-resistant Staphylococcus aureus or MRSA was discovered in 1961 in the United Kingdom. It if often referred to as a superbug. MRSA infections cause more deaths in the United States every year than AIDS.

Methicilli ...
Did you know?

Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.

Did you know?

The top 10 most important tips that will help you grow old gracefully include (1) quit smoking, (2) keep your weight down, (3) take supplements, (4) skip a meal each day or fast 1 day per week, (5) get a pet, (6) get medical help for chronic pain, (7) walk regularly, (8) reduce arguments, (9) put live plants in your living space, and (10) do some weight training.

Did you know?

In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.

Rinne Test, Assessing Bone Conduction Rinne Test, Assessing Bone Conduction
Allen Test: A patent ulnar artery reveals the return of palm perfusion despite radial artery compres Allen Test: A patent ulnar artery reveals the return of palm perfusion despite radial artery compres
Relative rate test, calibrating the molecular clock, and calculating divergence dates. Relative rate test, calibrating the molecular clock, and calculating divergence dates.
This is what was found when removing an air filter from a vehicle that had a lack-of-power concern. ... This is what was found when removing an air filter from a vehicle that had a lack-of-power concern. ...
Finding the derivative using the power rule - Solutions Finding the derivative using the power rule - Solutions
Are these the correct answers for finding the derivative using the power rule? Are these the correct answers for finding the derivative using the power rule?
Video: Fractures Animation

For a complete list of videos, visit our video library