This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: The failure rate in a German class is 30. In a class of 50 students, find the probability that ... (Read 114 times)

clippers!

  • Hero Member
  • *****
  • Posts: 828
on: Jul 25, 2018
The failure rate in a German class is 30. In a class of 50 students, find the probability that exactly five students will fail. Use the normal distribution to approximate the binomial distribution.
 
  Round the standard deviation to three decimal places to work the problem.

Question 2

A researcher obtained independent random samples of men and women between the ages of 20 and 29. She finds that 35 of 410 men and 59 of 398 women suffered from insomnia at least once a week during the past year.
 
  Decide whether or not the conditions and assumptions for inference with the two-proportions z-test are satisfied. Explain your answer.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

joechoochoy

  • Sr. Member
  • ****
  • Posts: 306
Reply #1 on: Jul 25, 2018
Answer to Question 1

P(4.5 < X < 5.

Answer to Question 2

The assumptions and conditions necessary for inference are satisfied. The samples are both random. The samples are independent of each other. There are at least 5 successes and at least 5 failures in each sample.


clippers!

  • Member
  • Posts: 828
Reply 2 on: Jul 25, 2018
Excellent

okolip

  • Member
  • Posts: 362
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

According to the American College of Allergy, Asthma & Immunology, more than 50 million Americans have some kind of food allergy. Food allergies affect between 4 and 6% of children, and 4% of adults, according to the CDC. The most common food allergies include shellfish, peanuts, walnuts, fish, eggs, milk, and soy.

Did you know?

The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).

Did you know?

Glaucoma is a leading cause of blindness. As of yet, there is no cure. Everyone is at risk, and there may be no warning signs. It is six to eight times more common in African Americans than in whites. The best and most effective way to detect glaucoma is to receive a dilated eye examination.

Did you know?

Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

Did you know?

The toxic levels for lithium carbonate are close to the therapeutic levels. Signs of toxicity include fine hand tremor, polyuria, mild thirst, nausea, general discomfort, diarrhea, vomiting, drowsiness, muscular weakness, lack of coordination, ataxia, giddiness, tinnitus, and blurred vision.

German Shepherd Dog German Shepherd Dog
Students rated their grandparents on a scale from 1 to 4 based on emotional closeness, time spent ... Students rated their grandparents on a scale from 1 to 4 based on emotional closeness, time spent ...
Drugs for Early and Moderate Heart Failure Drugs for Early and Moderate Heart Failure
Differences in the antigen-processing pathways between MHC molecules class I and class II. Differences in the antigen-processing pathways between MHC molecules class I and class II.
How to find the definite integral using the fundamental theorem of calculus (Part 1) How to find the definite integral using the fundamental theorem of calculus (Part 1)
Desired Fertility versus Total Fertility Rate in Developing Countries Desired Fertility versus Total Fertility Rate in Developing Countries
Video: What is Reverse Osmosis?

For a complete list of videos, visit our video library