« previous next »

Author Question: When conducting a hypothesis test for the population mean when sigma is known and the sample size is ... (Read 108 times)

mspears3

  • Hero Member
  • *****
  • Posts: 586
on: Jun 24, 2018
When conducting a hypothesis test for the population mean when sigma is known and the sample size is 30 or more, the test statistic follows the ___________________ ____________.
 
  A) Student's t-distribution
  B) binomial distribution
  C) normal distribution
  D) exponential distribution

Question 2

Suppose the average tread-life of a certain brand of tire is 42,000 miles and that this mileage follows the exponential probability distribution.
 
  What is the probability that a randomly selected tire will have a tread-life between 30,000 and 50,000 miles?A) 0.1854
  B) 0.2719
  C) 0.5105
  D) 0.6959


reversalruiz

  • Sr. Member
  • ****
  • Posts: 327
Reply #1 on: Jun 24, 2018
Answer to Question 1

C

Answer to Question 2

A


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.

Did you know?

The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.

Did you know?

Most fungi that pathogenically affect humans live in soil. If a person is not healthy, has an open wound, or is immunocompromised, a fungal infection can be very aggressive.

Did you know?

Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.

Did you know?

About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.

Tubal ligation. To minimize the size of the incisions necessary, laparoscopic surgery may be used to Tubal ligation. To minimize the size of the incisions necessary, laparoscopic surgery may be used to
Human Population Blasts Off Human Population Blasts Off
Three Population Pyramids Three Population Pyramids
What atomic or hybrid orbital on P make up the sigma bond between P and Cl in phosphorous ... What atomic or hybrid orbital on P make up the sigma bond between P and Cl in phosphorous ...
Data for a Hypothetical Paternity Test Using 13 CODIS Genes Data for a Hypothetical Paternity Test Using 13 CODIS Genes
Urine Test for Pregnancy Urine Test for Pregnancy
Video: Cardiac Cycle (Part 3 of 4)

For a complete list of videos, visit our video library