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

Author Question: A result is called statistically significant whenever a. the null hypothesis is true. b. the ... (Read 891 times)

elizabeth18

  • Hero Member
  • *****
  • Posts: 559
on: Jul 24, 2018
A result is called statistically significant whenever
 a. the null hypothesis is true.
  b. the alternative hypothesis is true.
  c. the p-value is less than or equal to the significance level.
  d. the p-value is larger than the significance level.

Question 2

Exam scores for a large introductory statistics class follow an approximate normal distribution with an average score of 56 and a standard deviation of 5 . The average exam score in your lab was 59.5 . The 20 students in your lab sections will be considered a random sample of all students who take this class. What is the probability that the average score of a random sample of 20 students exceeds 59.5?
 a. < 0.0001
  b. 0.0009
  c. 0.0026
  d. 0.2420


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

livaneabi

  • Sr. Member
  • ****
  • Posts: 328
Reply #1 on: Jul 24, 2018
Answer to Question 1

C

Answer to Question 2

B


elizabeth18

  • Member
  • Posts: 559
Reply 2 on: Jul 24, 2018
Excellent

alvinum

  • Member
  • Posts: 317
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

Despite claims by manufacturers, the supplement known as Ginkgo biloba was shown in a study of more than 3,000 participants to be ineffective in reducing development of dementia and Alzheimer’s disease in older people.

Did you know?

To maintain good kidney function, you should drink at least 3 quarts of water daily. Water dilutes urine and helps prevent concentrations of salts and minerals that can lead to kidney stone formation. Chronic dehydration is a major contributor to the development of kidney stones.

Did you know?

A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.

Did you know?

Your skin wrinkles if you stay in the bathtub a long time because the outermost layer of skin (which consists of dead keratin) swells when it absorbs water. It is tightly attached to the skin below it, so it compensates for the increased area by wrinkling. This happens to the hands and feet because they have the thickest layer of dead keratin cells.

Did you know?

There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

Bay (left) and chestnut (sometimes called "sorrel") are two of the most common coat colors Bay (left) and chestnut (sometimes called "sorrel") are two of the most common coat colors
Dish from Ecuador called "Cuy" Dish from Ecuador called "Cuy"
Renal calculi (stones) can form in several areas within the urinary tract. When they form in the kid Renal calculi (stones) can form in several areas within the urinary tract. When they form in the kid
true story true story
People whose behaviors violate norms are often called mentally ill. “Why else would they do such ... People whose behaviors violate norms are often called mentally ill. “Why else would they do such ...
By 2100, significant change will be in the far northern latitudes, parts of Asia, and Sub-Saharan By 2100, significant change will be in the far northern latitudes, parts of Asia, and Sub-Saharan
Video: Contraction and Relaxation Animation

For a complete list of videos, visit our video library