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

Author Question: At one college, GPA's have a bell-shaped distribution with a mean of 2.9 and a standard deviation of ... (Read 90 times)

joesmith1212

  • Hero Member
  • *****
  • Posts: 549
At one college, GPA's have a bell-shaped distribution with a mean of 2.9 and a standard deviation of 0.4. What percentage of students at the college have a GPA between 2.5 and 3.3?
 
  A) 99.7 B) 95 C) 68

Question 2

If H0 is true in a chi-square test of independence, then the expected and observed .
 
  a. means in a cell of a contingency table should be about equal
  b. standard deviations in a cell of a contingency table should be about equal
  c. frequencies in a cell of a contingency table should be unequal
  d. frequencies in a cell of a contingency table should be about equal



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Ahnyah

  • Sr. Member
  • ****
  • Posts: 336
Answer to Question 1

C

Answer to Question 2

D




joesmith1212

  • Member
  • Posts: 549
Reply 2 on: Aug 1, 2018
Wow, this really help


milbourne11

  • Member
  • Posts: 322
Reply 3 on: Yesterday
Gracias!

 

Did you know?

The term pharmacology is derived from the Greek words pharmakon("claim, medicine, poison, or remedy") and logos ("study").

Did you know?

About 60% of newborn infants in the United States are jaundiced; that is, they look yellow. Kernicterus is a form of brain damage caused by excessive jaundice. When babies begin to be affected by excessive jaundice and begin to have brain damage, they become excessively lethargic.

Did you know?

Your skin wrinkles if you stay in the bathtub a long time because the outermost layer of skin (which consists of dead keratin) swells when it absorbs water. It is tightly attached to the skin below it, so it compensates for the increased area by wrinkling. This happens to the hands and feet because they have the thickest layer of dead keratin cells.

Did you know?

The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.

Did you know?

The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

For a complete list of videos, visit our video library