There are 500 employees in a firm, and 45 are female. A sample of 60 employees is selected randomly. ...

Author Question: There are 500 employees in a firm, and 45 are female. A sample of 60 employees is selected randomly. ... (Read 65 times)

TVarnum

Hero Member
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

Sr. Member
Posts: 337

Reply #1 on: Jun 24, 2018

Answer to Question 1

a. .0603
b. .7482

Answer to Question 2

d

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