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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 52 times)

dbose

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  • 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
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Reply #1 on: Jun 20, 2018
Answer to Question 1

B

Answer to Question 2

D


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