« previous next »

Author Question: To go from the equation in the previous problem to the equation for t we must a. substitute ... (Read 26 times)

rmenurse

  • Hero Member
  • *****
  • Posts: 513
on: Jun 20, 2018
To go from the equation in the previous problem to the equation for t we must
 
  a. substitute sample means for population means.
  b. substitute sample variances for population variances.
  c. substitute sample standard deviations for population variances.
  d. draw very large samples.

Question 2

The t statistic differs from z in that
 
  a. it applies to variances.
  b. it is used when population variances are not known.
  c. it involves an assumption of normality.
  d. and b) but not c).


izzat

  • Sr. Member
  • ****
  • Posts: 328
Reply #1 on: Jun 20, 2018
Answer to Question 1

B

Answer to Question 2

B


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.

Did you know?

Hip fractures are the most serious consequences of osteoporosis. The incidence of hip fractures increases with each decade among patients in their 60s to patients in their 90s for both women and men of all populations. Men and women older than 80 years of age show the highest incidence of hip fractures.

Did you know?

Approximately 25% of all reported medication errors result from some kind of name confusion.

Did you know?

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

Did you know?

Most strokes are caused when blood clots move to a blood vessel in the brain and block blood flow to that area. Thrombolytic therapy can be used to dissolve the clot quickly. If given within 3 hours of the first stroke symptoms, this therapy can help limit stroke damage and disability.

The problem of completing the 5 end in copying a linear DNA molecule The problem of completing the 5 end in copying a linear DNA molecule
Math Thinking Problem Math Thinking Problem
Identification of the numbers in the Word Problem Identification of the numbers in the Word Problem
The position of an object that is oscillating on a spring is given by the equation x = (18.3 ... The position of an object that is oscillating on a spring is given by the equation x = (18.3 ...
Find an equation of the tangent line to the graph of f(x) = sqrt(x) / (x+1) at the point x=1 Find an equation of the tangent line to the graph of f(x) = sqrt(x) / (x+1) at the point x=1
Problem Problem
Video: What is Cholesterols? Introduction to Lipoproteins

For a complete list of videos, visit our video library