This topic contains a solution. Click here to go to the answer

Author Question: Which distribution is used in testing the hypotheses about the equality of two population variances? ... (Read 99 times)

RODY.ELKHALIL

  • Hero Member
  • *****
  • Posts: 591
Which distribution is used in testing the hypotheses about the equality of two population variances?
 
  A) z-distribution
  B) F-distribution
  C) x2 distribution
  D) t-distribution

Question 2

A local FedEx/Kinkos has three black-and-white copy machines and two color copiers. Based on historical data, the chances that each black-and-white copier will be down for repairs is 0.10.
 
  The color copiers are more of a problem and are down 20 of the time each.Based on this information, what is the probability that if a customer needs a color copy, both color machines will be down for repairs?A) 0.04
  B) 0.96
  C) 0.47
  D) 0.42



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

ambernicolefink

  • Sr. Member
  • ****
  • Posts: 359
Answer to Question 1

B

Answer to Question 2

A





 

Did you know?

Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.

Did you know?

To prove that stomach ulcers were caused by bacteria and not by stress, a researcher consumed an entire laboratory beaker full of bacterial culture. After this, he did indeed develop stomach ulcers, and won the Nobel Prize for his discovery.

Did you know?

In inpatient settings, adverse drug events account for an estimated one in three of all hospital adverse events. They affect approximately 2 million hospital stays every year, and prolong hospital stays by between one and five days.

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?

The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.

For a complete list of videos, visit our video library