« previous next »

Author Question: Explain what is meant by the power of a hypothesis test and suggest one way a researcher might ... (Read 176 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 B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.

Did you know?

Disorders that may affect pharmacodynamics include genetic mutations, malnutrition, thyrotoxicosis, myasthenia gravis, Parkinson's disease, and certain forms of insulin-resistant diabetes mellitus.

Did you know?

For pediatric patients, intravenous fluids are the most commonly cited products involved in medication errors that are reported to the USP.

Did you know?

About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.

Did you know?

The first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.

Cover/Uncover Test Cover/Uncover Test
Photo of a sign taken at an emissions test facility. Photo of a sign taken at an emissions test facility.
Herpes simplex 2 rapid test. Herpes simplex 2 rapid test.
The 10 Steps to Better Test-Taking The 10 Steps to Better Test-Taking
El Anatsui Flag for a New World Power El Anatsui Flag for a New World Power
Power of Positivity Power of Positivity
Video: Baroreceptor Reflex

For a complete list of videos, visit our video library