« previous next »

Author Question: Explain what is meant by the power of a hypothesis test and suggest one way a researcher might ... (Read 192 times)

acc299

  • Hero Member
  • *****
  • Posts: 569
on: Jul 24, 2018
Explain what is meant by the power of a hypothesis test and suggest one way a researcher might change their study design to increase the power of the test.

Question 2

Suppose on a highway with a speed limit of 65 mph, the speed of cars are independent and normally distributed with an average speed = 65 mph and standard deviation = 5 mph. What is the expected value of the sample mean speed in a random sample of n = 100 cars?


SeanoH09

  • Sr. Member
  • ****
  • Posts: 323
Reply #1 on: Jul 24, 2018
Answer to Question 1

The power of a hypothesis test is the probability that we decide to reject the null hypothesis given the alternative hypothesis is actually true. One way to increase power is to increase the sample size.

Answer to Question 2

65 mph


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.

Did you know?

The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."

Did you know?

The types of cancer that alpha interferons are used to treat include hairy cell leukemia, melanoma, follicular non-Hodgkin's lymphoma, and AIDS-related Kaposi's sarcoma.

Did you know?

There are 60,000 miles of blood vessels in every adult human.

Did you know?

No drugs are available to relieve parathyroid disease. Parathyroid disease is caused by a parathyroid tumor, and it needs to be removed by surgery.

Straight Leg Raising Test Straight Leg Raising Test
The New Solar Power Station Near Seville, Spain The New Solar Power Station Near Seville, Spain
Power in the United States: The Model Proposed by C. Wright Mills Power in the United States: The Model Proposed by C. Wright Mills
The wobble hypothesis The wobble hypothesis
Controlled Scientific Experiments Scientists use experimental research to test hypotheses Controlled Scientific Experiments Scientists use experimental research to test hypotheses
Use the power rule to find derivative Use the power rule to find derivative
Video: EpiPen Animation (Part 1)

For a complete list of videos, visit our video library