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 116 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
Wow, this really help

Missbam101

  • Member
  • Posts: 341
Reply 3 on: Yesterday
Gracias!

« previous next »
 

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?

All adverse reactions are commonly charted in red ink in the patient's record and usually are noted on the front of the chart. Failure to follow correct documentation procedures may result in malpractice lawsuits.

Did you know?

Approximately 500,000 babies are born each year in the United States to teenage mothers.

Did you know?

More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.

Did you know?

Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.

CycleBeads help women use the Standard Days Method. CycleBeads help women use the Standard Days Method.
Urinalysis. During a simple urinalysis, a stick with colored blocks is dipped into a urine specimen. Urinalysis. During a simple urinalysis, a stick with colored blocks is dipped into a urine specimen.
Standard precaution guidelines. Additional guidelines/protocols may be utilized depending on the ... Standard precaution guidelines. Additional guidelines/protocols may be utilized depending on the ...
How to quickly find the vertex of a quadratic equation that is in standard form How to quickly find the vertex of a quadratic equation that is in standard form
A blade and assorted plates for a standard grinder A blade and assorted plates for a standard grinder
Video: Graded potentials - electrical characteristics and types

For a complete list of videos, visit our video library