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

Author Question: When should a t statistic be used? a.When the mean is known but the standard deviation is ... (Read 54 times)

sjones

  • Hero Member
  • *****
  • Posts: 520
on: Jun 24, 2018

  When should a t statistic be used?
 

  a.When the mean is known but the standard deviation is unknown and must be estimated by s.
  b.When the standard deviation is known but the mean is unknown and must be estimated by .
  c.When both the mean is known and the standard deviation is known.
  d.When both the mean is unknown and must be estimated by and the standard deviation is unknown and must be estimated by s.

Question 2


  Suppose a random sample of 10 televisions has a mean life of 25 years. If it is known that , what is the test statistic for testing H0: and Ha: ?
  a.-2.66
  b.There is not enough information given to determine the test statistic.
  c.0.60
  d.0.004
 


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Meganchabluk

  • Sr. Member
  • ****
  • Posts: 301
Reply #1 on: Jun 24, 2018
Answer to Question 1

correct: d

Answer to Question 2


correct: a


sjones

  • Member
  • Posts: 520
Reply 2 on: Jun 24, 2018
YES! Correct, THANKS for helping me on my review

ttt030911

  • Member
  • Posts: 315
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

On average, the stomach produces 2 L of hydrochloric acid per day.

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?

Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.

Did you know?

Individuals are never “cured” of addictions. Instead, they learn how to manage their disease to lead healthy, balanced lives.

Did you know?

Many people have small pouches in their colons that bulge outward through weak spots. Each pouch is called a diverticulum. About 10% of Americans older than age 40 years have diverticulosis, which, when the pouches become infected or inflamed, is called diverticulitis. The main cause of diverticular disease is a low-fiber diet.

Deviation of Normal Posture Deviation of Normal Posture
Standard Alcoholic Drink Sizes Standard Alcoholic Drink Sizes
Standard precaution guidelines. Additional guidelines/protocols may be utilized depending on the ... Standard precaution guidelines. Additional guidelines/protocols may be utilized depending on the ...
Massage is used as a complement to standard medical treatment in hospitals and skilled nursing ... Massage is used as a complement to standard medical treatment in hospitals and skilled nursing ...
Some Standard Shapes of Greek Vessels Some Standard Shapes of Greek Vessels
A karyotype arranges the chromosomes in a standard format A karyotype arranges the chromosomes in a standard format
Video: Introduction to Spirometry

For a complete list of videos, visit our video library