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

Author Question: One-sample z tests are seldom used because _____. a. the population mean and standard deviation ... (Read 53 times)

jilianpiloj

  • Hero Member
  • *****
  • Posts: 521
on: Jun 19, 2018
One-sample z tests are seldom used because _____.
 
  a. the population mean and standard deviation are seldom both known
  b. the sample mean and standard deviation are seldom both known
  c. the calculations are too complex
  d. no conclusions can be drawn from the results of the test

Question 2

When a large z value is found when we compare a single sample to a population, we may deduce that _____.
 
  a. chance is a likely explanation for the difference
  b. something went wrong in our calculations
  c. the independent variable probably had no effect
  d. chance is not a likely explanation for the difference


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

coyin

  • Sr. Member
  • ****
  • Posts: 334
Reply #1 on: Jun 19, 2018
Answer to Question 1

A
Populations are usually so large that we never know their standard deviations.

Answer to Question 2

D


jilianpiloj

  • Member
  • Posts: 521
Reply 2 on: Jun 19, 2018
Great answer, keep it coming :)

jordangronback

  • Member
  • Posts: 339
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

There are major differences in the metabolism of morphine and the illegal drug heroin. Morphine mostly produces its CNS effects through m-receptors, and at k- and d-receptors. Heroin has a slight affinity for opiate receptors. Most of its actions are due to metabolism to active metabolites (6-acetylmorphine, morphine, and morphine-6-glucuronide).

Did you know?

In 1844, Charles Goodyear obtained the first patent for a rubber condom.

Did you know?

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

Did you know?

More than one-third of adult Americans are obese. Diseases that kill the largest number of people annually, such as heart disease, cancer, diabetes, stroke, and hypertension, can be attributed to diet.

Did you know?

The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.

A genetic bottleneck reduces a population temporarily to very low levels, removing much of its genet A genetic bottleneck reduces a population temporarily to very low levels, removing much of its genet
Sample prescription for chlorhexidine. Sample prescription for chlorhexidine.
Population and Settlement Population and Settlement
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 ...
How to sketch a quadratic equation that is in standard form (Question 2) How to sketch a quadratic equation that is in standard form (Question 2)
Human Population Growth Human Population Growth
Video: Types of Transport - Uniport, Antiport and Symport (Glucose and Na+K+ Transporters)

For a complete list of videos, visit our video library