Author Question: There are 500 employees in a firm, and 45 are female. A sample of 60 employees is selected randomly. ... (Read 113 times)

TVarnum

  • Hero Member
  • *****
  • Posts: 548
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
Answer to Question 1

a. .0603
b. .7482

Answer to Question 2

d



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.

Did you know?

Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.

Did you know?

Many people have small pouches in their colons that bulge outward through weak spots. Each pouch is called a diverticulum. About 10% of Americans older than age 40 years have diverticulosis, which, when the pouches become infected or inflamed, is called diverticulitis. The main cause of diverticular disease is a low-fiber diet.

Did you know?

Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.

Did you know?

About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.

For a complete list of videos, visit our video library