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

Author Question: The failure rate in a German class is 30. In a class of 50 students, find the probability that ... (Read 302 times)

clippers!

  • Hero Member
  • *****
  • Posts: 828
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
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
:D TYSM


meow1234

  • Member
  • Posts: 333
Reply 3 on: Yesterday
Great answer, keep it coming :)

 

Did you know?

Historic treatments for rheumatoid arthritis have included gold salts, acupuncture, a diet consisting of apples or rhubarb, nutmeg, nettles, bee venom, bracelets made of copper, prayer, rest, tooth extractions, fasting, honey, vitamins, insulin, snow collected on Christmas, magnets, and electric convulsion therapy.

Did you know?

When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

Did you know?

Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.

Did you know?

Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.

Did you know?

Persons who overdose with cardiac glycosides have a better chance of overall survival if they can survive the first 24 hours after the overdose.

For a complete list of videos, visit our video library