Author Question: A random sample of 850 high school girls showed that 400 had done strenuous exercise over the past ... (Read 90 times)

Starlight

  • Hero Member
  • *****
  • Posts: 567
A random sample of 850 high school girls showed that 400 had done strenuous exercise over the past year. The researcher wants to test the hypotheses below for p = the proportion of all high school girls who do strenuous exercise. H0: p  0.50 Ha: p < 0.50 Report the conclusion in the context of the situation.

Question 2

Imagine taking many different samples of n = 30 values from a population of resting pulse rate values. Which one of these statistics is most likely to have a sampling distribution that is approximately a normal distribution?
 a. The maximum pulse rate in a sample.
  b. The minimum pulse rate in a sample.
  c. The mean pulse rate in a sample.
  d. The mean pulse rate in the population.



enass

  • Sr. Member
  • ****
  • Posts: 380
Answer to Question 1

It seems that less than 50 of all high school girls do strenuous exercise.

Answer to Question 2

C



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question


 

Did you know?

Aspirin may benefit 11 different cancers, including those of the colon, pancreas, lungs, prostate, breasts, and leukemia.

Did you know?

The longest a person has survived after a heart transplant is 24 years.

Did you know?

Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.

Did you know?

In Eastern Europe and Russia, interferon is administered intranasally in varied doses for the common cold and influenza. It is claimed that this treatment can lower the risk of infection by as much as 60–70%.

Did you know?

Though methadone is often used to treat dependency on other opioids, the drug itself can be abused. Crushing or snorting methadone can achieve the opiate "rush" desired by addicts. Improper use such as these can lead to a dangerous dependency on methadone. This drug now accounts for nearly one-third of opioid-related deaths.

For a complete list of videos, visit our video library