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Author Question: In a large university, 20 of the students are Business majors. A random sample of 100 students is ... (Read 107 times)

dalyningkenk

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on: Jun 24, 2018
In a large university, 20 of the students are Business majors. A random sample of 100 students is selected, and their majors are recorded.
 a. Compute the standard error of the proportion.
  b. What is the probability that the sample contains at least 12 Business majors?
  c. What is the probability that the sample contains less than 15 Business majors?
  d. What is the probability that the sample contains between 12 and 14 Business majors?

Question 2

Assume z is a standard normal random variable. Then P(1.96  z  1.4) equals _____.
 a. .8942
  b. .0558
  c. .475
  d. .4192


Anonymous

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Reply #1 on: Jun 24, 2018
Answer to Question 1

a. .04
b. .9772
c. .1056
d. .044

Answer to Question 2

b


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