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Author Question: There are 500 employees in a firm, and 45 are female. A sample of 60 employees is selected randomly. ... (Read 97 times)

TVarnum

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  • Posts: 548
on: Jun 24, 2018
There are 500 employees in a firm, and 45 are female. A sample of 60 employees is selected randomly.
 a. Determine the standard error of the proportion.
  b. What is the probability that the sample proportion of females is between .40 and .55?

Question 2

Assume z is a standard normal random variable. Then P(1.20  z  1.85) equals _____.
 a. .4678
  b. .3849
  c. .8527
  d. .0829


jamesnevil303

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

a. .0603
b. .7482

Answer to Question 2

d


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