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

Author Question: Scores on an English test are normally distributed with a mean of 31.4 and a standard deviation of ... (Read 64 times)

AEWBW

  • Hero Member
  • *****
  • Posts: 579
on: Jul 25, 2018
Scores on an English test are normally distributed with a mean of 31.4 and a standard deviation of 8.9. Find the 41st percentile.
 
  A) 29.4 B) 26.1 C) 36.7 D) 33.4

Question 2

Assume that the random variable X is normally distributed with mean and standard deviation Find the 87th percentile for X.
 
  A) 66.44 B) 96.44 C) 89.72 D) 93.56


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

alexisweber49

  • Sr. Member
  • ****
  • Posts: 311
Reply #1 on: Jul 25, 2018
Answer to Question 1

A

Answer to Question 2

D


AEWBW

  • Member
  • Posts: 579
Reply 2 on: Jul 25, 2018
YES! Correct, THANKS for helping me on my review

isabelt_18

  • Member
  • Posts: 342
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.

Did you know?

People about to have surgery must tell their health care providers about all supplements they take.

Did you know?

The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."

Did you know?

One way to reduce acid reflux is to lose two or three pounds. Most people lose weight in the belly area first when they increase exercise, meaning that heartburn can be reduced quickly by this method.

Did you know?

Opium has influenced much of the world's most popular literature. The following authors were all opium users, of varying degrees: Lewis Carroll, Charles, Dickens, Arthur Conan Doyle, and Oscar Wilde.

Coagulase Test Coagulase Test
When the IQ scores of identical twins differ, behavior genetics researchers attribute these to ... When the IQ scores of identical twins differ, behavior genetics researchers attribute these to ...
Diesel Emission Testing - Opacity Test. Diesel Emission Testing - Opacity Test.
The experimental design and results of Lester and Gorzalka (1988). On the third test, the female ... The experimental design and results of Lester and Gorzalka (1988). On the third test, the female ...
Cards Used in a Formal Test of Problem Solving Cards Used in a Formal Test of Problem Solving
IQ scores form what mathematicians call a normal distribution "bell curve" IQ scores form what mathematicians call a normal distribution "bell curve"
Video: Chemical Buffers - protein buffer, phosphate buffer system and bicarbonate buffer system

For a complete list of videos, visit our video library