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 211 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
Thanks for the timely response, appreciate it

dawsa925

  • Member
  • Posts: 326
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.

Did you know?

Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).

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?

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?

Coca-Cola originally used coca leaves and caffeine from the African kola nut. It was advertised as a therapeutic agent and "pickerupper." Eventually, its formulation was changed, and the coca leaves were removed because of the effects of regulation on cocaine-related products.

Feedforward control of breathing rate in an animal trained for athletic exercise. Feedforward control of breathing rate in an animal trained for athletic exercise.
German Shorthaired Pointer German Shorthaired Pointer
Common ancestry predicts where we should find vestigial limbs Common ancestry predicts where we should find vestigial limbs
meds for heart failure meds for heart failure
Acceptable ranges of heart rate Acceptable ranges of heart rate
Outgroup role in relative rate test Outgroup role in relative rate test
Video: Carpal Tunnel Syndrome

For a complete list of videos, visit our video library