This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: SAT verbal scores are normally distributed with a mean of 430 and a standard deviation of 120 (based ... (Read 116 times)

moongchi

  • Hero Member
  • *****
  • Posts: 516
on: Aug 1, 2018
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
Reply #1 on: Aug 1, 2018
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


moongchi

  • Hero Member
  • *****
  • Posts: 516
Reply #2 on: Aug 1, 2018
Thanks


TDubDCFL

  • Sr. Member
  • ****
  • Posts: 357
Reply #3 on: Aug 1, 2018
Welcome :)


« previous next »
 

Did you know?

More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.

Did you know?

Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.

Did you know?

Elderly adults are at greatest risk of stroke and myocardial infarction and have the most to gain from prophylaxis. Patients ages 60 to 80 years with blood pressures above 160/90 mm Hg should benefit from antihypertensive treatment.

Did you know?

People often find it difficult to accept the idea that bacteria can be beneficial and improve health. Lactic acid bacteria are good, and when eaten, these bacteria improve health and increase longevity. These bacteria included in foods such as yogurt.

Did you know?

People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

Types of transporters based on the direction of transport. Types of transporters based on the direction of transport.
Range of Motion of the Wrist and Hand Joints, Radial and Ulnar Deviation of the Wrist Range of Motion of the Wrist and Hand Joints, Radial and Ulnar Deviation of the Wrist
International Television Viewing Rates in Childhood In most developed countries, children watch TV International Television Viewing Rates in Childhood In most developed countries, children watch TV
Three standard sizes of cuffs: a small cuff for a child or frail adult; a normal-sized adult cuff; ... Three standard sizes of cuffs: a small cuff for a child or frail adult; a normal-sized adult cuff; ...
Using a water-based cleaning system helps reduce the hazards from using strong chemicals. Using a water-based cleaning system helps reduce the hazards from using strong chemicals.
. In which distribution is the mean more “typical” of all scores? . In which distribution is the mean more “typical” of all scores?
Video: Cognitive development by Piaget (Preoperational stage or intelligence)

For a complete list of videos, visit our video library