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 45 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

abro1885

  • Member
  • Posts: 337
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).

Did you know?

Nitroglycerin is used to alleviate various heart-related conditions, and it is also the chief component of dynamite (but mixed in a solid clay base to stabilize it).

Did you know?

Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

Did you know?

When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.

Did you know?

Common abbreviations that cause medication errors include U (unit), mg (milligram), QD (every day), SC (subcutaneous), TIW (three times per week), D/C (discharge or discontinue), HS (at bedtime or "hours of sleep"), cc (cubic centimeters), and AU (each ear).

Deviation of Normal Posture Deviation of Normal Posture
Standard Precautions for the Care of all Patients in All Health Care Settings Standard Precautions for the Care of all Patients in All Health Care Settings
standard reduction potential (Eo), the greater the tendency of the oxidized form of a redox couple standard reduction potential (Eo), the greater the tendency of the oxidized form of a redox couple
How to fully analyze the standard and factored form of a quadratic equation (Question 1) How to fully analyze the standard and factored form of a quadratic equation (Question 1)
Ulnar and radial deviation of the wrist Ulnar and radial deviation of the wrist
Standard Electrode Potentials at 25 Degrees Standard Electrode Potentials at 25 Degrees
Video: Hierarchical Sequencing Method - Sequence Tagged Sites

For a complete list of videos, visit our video library