« previous next »

Author Question: We know that 25 of the class got an A on the last exam, and 30 got a B. What percent got either an A ... (Read 24 times)

dbose

  • Hero Member
  • *****
  • Posts: 597
on: Jun 20, 2018
We know that 25 of the class got an A on the last exam, and 30 got a B. What percent got either an A or a B?
 
  a. 25 30 = 7.5
  b. 25 + 30  = 55
  c. 45
  d. We cannot tell from the information that is presented.

Question 2

We care a great deal about areas under the normal distribution because
 
  a. they translate directly to expected proportions.
  b. they are additive.
  c. they allow us to calculate probabilities of categories of outcomes.
  d. all of the above


JaynaD87

  • Sr. Member
  • ****
  • Posts: 368
Reply #1 on: Jun 20, 2018
Answer to Question 1

B

Answer to Question 2

D


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Patients should never assume they are being given the appropriate drugs. They should make sure they know which drugs are being prescribed, and always double-check that the drugs received match the prescription.

Did you know?

There are 60,000 miles of blood vessels in every adult human.

Did you know?

The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.

Did you know?

In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.

Did you know?

Signs and symptoms that may signify an eye tumor include general blurred vision, bulging eye(s), double vision, a sensation of a foreign body in the eye(s), iris defects, limited ability to move the eyelid(s), limited ability to move the eye(s), pain or discomfort in or around the eyes or eyelids, red or pink eyes, white or cloud spots on the eye(s), colored spots on the eyelid(s), swelling around the eyes, swollen eyelid(s), and general vision loss.

This 1795 engraving of a Stamp Act protest delineates a class division. The three British Tories—one This 1795 engraving of a Stamp Act protest delineates a class division. The three British Tories—one
One target for expanding medical services involves vaccinations. Only 78 percent of children ages 19 ... One target for expanding medical services involves vaccinations. Only 78 percent of children ages 19 ...
Who Goes to College? Comparing Social Class and Ability in Determining College Attendance Who Goes to College? Comparing Social Class and Ability in Determining College Attendance
Schematic representation of MHC class I molecule, consisting of 3 α domains and 1 β2-microglobulin ... Schematic representation of MHC class I molecule, consisting of 3 α domains and 1 β2-microglobulin ...
How to solve simple percent word problems (Part 1) How to solve simple percent word problems (Part 1)
An exam question about chromosomes and alleles An exam question about chromosomes and alleles
Video: Leukemia

For a complete list of videos, visit our video library