« previous next »

Author Question: There are 500 employees in a firm, and 45 are female. A sample of 60 employees is selected randomly. ... (Read 84 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?

For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

Did you know?

The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.

Did you know?

Though “Krazy Glue” or “Super Glue” has the ability to seal small wounds, it is not recommended for this purpose since it contains many substances that should not enter the body through the skin, and may be harmful.

Did you know?

In 2012, nearly 24 milliion Americans, aged 12 and older, had abused an illicit drug, according to the National Institute on Drug Abuse (NIDA).

Did you know?

Calcitonin is a naturally occurring hormone. In women who are at least 5 years beyond menopause, it slows bone loss and increases spinal bone density.

Blood glucose measurement. A postprandial test may be self-administered. (a) A lance pierces the ski Blood glucose measurement. A postprandial test may be self-administered. (a) A lance pierces the ski
Sample Medicare identification card. Sample Medicare identification card.
Selected Drugs for Angina and Myocardial Infarction Selected Drugs for Angina and Myocardial Infarction
Selected Antifungal Drugs Selected Antifungal Drugs
Sample time management planning chart for a massage student. Sample time management planning chart for a massage student.
What is the [OH-] in a seawater sample if the pH is 8.65? What is the [OH-] in a seawater sample if the pH is 8.65?
Video: Lactation and Breast Feeding

For a complete list of videos, visit our video library