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

Author Question: Scores on an aptitude test are normally distributed with a mean of 400 and a standard deviation of ... (Read 95 times)

TFauchery

  • Hero Member
  • *****
  • Posts: 500
on: Jul 25, 2018
Scores on an aptitude test are normally distributed with a mean of 400 and a standard deviation of 60. Explain how you would find any given percentile.
 
  What will be an ideal response?

Question 2

If the probability of a newborn kitten being female is 0.5, find the probability that in 100 births, 55 or more will be female. Use the normal distribution to approximate the binomial distribution.
 
  A) 0.7967 B) 0.8159 C) 0.1841 D) 0.0606


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

jackie

  • Sr. Member
  • ****
  • Posts: 324
Reply #1 on: Jul 25, 2018
Answer to Question 1

Answers will vary. Possible answer: Sketch a normal curve and shade the area associated with the given percentage. Use a table of areas for the standard normal curve to find the z-score delimiting the shaded area. Find the x-value corresponding to the z-score by using x =  + z.

Answer to Question 2

C


TFauchery

  • Hero Member
  • *****
  • Posts: 500
Reply #2 on: Jul 25, 2018
Thanks


jackie

  • Sr. Member
  • ****
  • Posts: 324
Reply #3 on: Jul 25, 2018
Welcome :)


« previous next »
 

Did you know?

Alcohol acts as a diuretic. Eight ounces of water is needed to metabolize just 1 ounce of alcohol.

Did you know?

Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.

Did you know?

A serious new warning has been established for pregnant women against taking ACE inhibitors during pregnancy. In the study, the risk of major birth defects in children whose mothers took ACE inhibitors during the first trimester was nearly three times higher than in children whose mothers didn't take ACE inhibitors. Physicians can prescribe alternative medications for pregnant women who have symptoms of high blood pressure.

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?

Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.

Evaluation of a child for cystic fibrosis with a sweat chloride test. Sweat is being collected under Evaluation of a child for cystic fibrosis with a sweat chloride test. Sweat is being collected under
A test for iconic sensory memory A test for iconic sensory memory
Monitoring and Following Up on Laboratory Test Results Monitoring and Following Up on Laboratory Test Results
Benedict's test results Benedict's test results
If the random variable x is exponentially distributed with parameter λ = 4, then P(x ≤ ... If the random variable x is exponentially distributed with parameter λ = 4, then P(x ≤ ...
Polygraph Test Polygraph Test
Video: Erythropoietin (EPO)

For a complete list of videos, visit our video library