This topic contains a solution. Click here to go to the answer

Author Question: SAT verbal scores are normally distributed with a mean of 430 and a standard deviation of 120 (based ... (Read 68 times)

moongchi

  • Hero Member
  • *****
  • Posts: 516
SAT verbal scores are normally distributed with a mean of 430 and a standard deviation of 120 (based on the data from the College Board ATP). If a sample of 15 students is selected randomly, find the probability that the sample mean is above 500.
 
  Does the Central Limit theorem apply for this problem?

Question 2

Choosing 5 people (without replacement) from a group of 32 people, of which 15 are women, keeping track of the number of men chosen.
 
  A) Not binomial: the trials are not independent.
  B) Not binomial: the number of trials is not fixed.
  C) Not binomial: there are more than two outcomes for each trial.
  D) Procedure results in a binomial distribution.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

TDubDCFL

  • Sr. Member
  • ****
  • Posts: 357
Answer to Question 1

Yes; even though the sample size is small, the original population is normal and the population SD is known.

Answer to Question 2

A





 

Did you know?

People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.

Did you know?

Anti-aging claims should not ever be believed. There is no supplement, medication, or any other substance that has been proven to slow or stop the aging process.

Did you know?

The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.

Did you know?

Though newer “smart” infusion pumps are increasingly becoming more sophisticated, they cannot prevent all programming and administration errors. Health care professionals that use smart infusion pumps must still practice the rights of medication administration and have other professionals double-check all high-risk infusions.

Did you know?

Calcitonin is a naturally occurring hormone. In women who are at least 5 years beyond menopause, it slows bone loss and increases spinal bone density.

For a complete list of videos, visit our video library