« previous next »

Author Question: There are 500 employees in a firm, and 45 are female. A sample of 60 employees is selected randomly. ... (Read 106 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


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.

Did you know?

Individuals are never “cured” of addictions. Instead, they learn how to manage their disease to lead healthy, balanced lives.

Did you know?

Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.

Did you know?

Despite claims by manufacturers, the supplement known as Ginkgo biloba was shown in a study of more than 3,000 participants to be ineffective in reducing development of dementia and Alzheimer’s disease in older people.

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.

Female choice of males based on nuptial gifts. Female choice of males based on nuptial gifts.
Female wolf spider (Schizocosa ocreata) Female wolf spider (Schizocosa ocreata)
(A) The male urethra. (B) The female urethra. (A) The male urethra. (B) The female urethra.
Procedures and Diagnostic Tests Related to the Female Reproductive System Procedures and Diagnostic Tests Related to the Female Reproductive System
Selected Immunosuppressants Selected Immunosuppressants
Sample of résumé content. Sample of résumé content.
Video: How eudicots (true dicots) differ from monocots Animation

For a complete list of videos, visit our video library