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

Author Question: Scores of high school students on a national mathematics exam in Egypt were normally distributed ... (Read 89 times)

cagreen833

  • Hero Member
  • *****
  • Posts: 544
on: Jun 24, 2018
Scores of high school students on a national mathematics exam in Egypt were normally distributed with a mean of 86 and a standard deviation of 4. A) What is the probability that a randomly selected student will have a score of 80 or higher? B) If there were 97,680 students with scores higher than 91, how many students took the test? ___________________ _ (Remove all commas from your answer before submitting).
 Fill in the blank(s) with correct word

Question 2

Which of the following statements are correct?
 a. A confidence level expresses the degree of certainty that an interval will include the actual value of the population parameter.
  b. A confidence level expresses the degree of certainty that a point estimate will include the actual value of the population parameter.
  c. A confidence level expresses the degree of certainty that an interval will include the actual value of the sample statistic.
  d. A confidence level expresses the degree of certainty that a point estimate will include the actual value of the sample statistic.
  e. None of these statements is correct.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

mfedorka

  • Sr. Member
  • ****
  • Posts: 324
Reply #1 on: Jun 24, 2018
Answer to Question 1

0.9332; 925000

Answer to Question 2

A


cagreen833

  • Member
  • Posts: 544
Reply 2 on: Jun 24, 2018
Excellent

Dnite

  • Member
  • Posts: 297
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

Limit intake of red meat and dairy products made with whole milk. Choose skim milk, low-fat or fat-free dairy products. Limit fried food. Use healthy oils when cooking.

Did you know?

Eating carrots will improve your eyesight. Carrots are high in vitamin A (retinol), which is essential for good vision. It can also be found in milk, cheese, egg yolks, and liver.

Did you know?

The strongest synthetic topical retinoid drug available, tazarotene, is used to treat sun-damaged skin, acne, and psoriasis.

Did you know?

Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.

Did you know?

Every flu season is different, and even healthy people can get extremely sick from the flu, as well as spread it to others. The flu season can begin as early as October and last as late as May. Every person over six months of age should get an annual flu vaccine. The vaccine cannot cause you to get influenza, but in some seasons, may not be completely able to prevent you from acquiring influenza due to changes in causative viruses. The viruses in the flu shot are killed—there is no way they can give you the flu. Minor side effects include soreness, redness, or swelling where the shot was given. It is possible to develop a slight fever, and body aches, but these are simply signs that the body is responding to the vaccine and making itself ready to fight off the influenza virus should you come in contact with it.

The proportion of men and women with elevated blood pressure or taking hypertension medication incre The proportion of men and women with elevated blood pressure or taking hypertension medication incre
Ancient Egypt Ancient Egypt
Video: Stroke volume - afterload definition & hypertension

For a complete list of videos, visit our video library