« previous next »

Author Question: For a two-tail test, the p-value is the probability of obtaining a value for the test statistic as ... (Read 107 times)

daltonest1984

  • Hero Member
  • *****
  • Posts: 536
on: Jun 24, 2018
For a two-tail test, the p-value is the probability of obtaining a value for the test statistic as
 a. likely as that provided by the sample
  b. unlikely as that provided by the sample
  c. likely as that provided by the population
  d. unlikely as that provided by the population

Question 2

A random sample of 100 credit sales in a department store showed an average sale of 120.00 . From past data, it is known that the standard deviation of the population is 40.00.
 a. Determine the standard error of the mean.
  b. With a 0.95 probability, determine the margin of error.
  c. What is the 95 confidence interval of the population mean?


lauravaras

  • Sr. Member
  • ****
  • Posts: 347
Reply #1 on: Jun 24, 2018
Answer to Question 1

B

Answer to Question 2

a. 4
b. 7.84
c. 112.16 to 127.84


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.

Did you know?

Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.

Did you know?

The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.

Did you know?

The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.

Did you know?

Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.

Ultraviolet mosaic of Mira's bow shock and tail obtained using NASA's Galaxy Evolution Exp Ultraviolet mosaic of Mira's bow shock and tail obtained using NASA's Galaxy Evolution Exp
The Wug Test The Wug Test
Performing a Spirometry Test to Measure Forced Vital Capacity Performing a Spirometry Test to Measure Forced Vital Capacity
The upper panel shows that scores of four diverse samples of boys on a moral reasoning test show a ... The upper panel shows that scores of four diverse samples of boys on a moral reasoning test show a ...
A latex agglutination test for rheumatoid factor. A positive control at 1. A negative control at 2. ... A latex agglutination test for rheumatoid factor. A positive control at 1. A negative control at 2. ...
Allen’s test Allen’s test
Video: Eczema

For a complete list of videos, visit our video library