« previous next »

Author Question: To go from the equation in the previous problem to the equation for t we must a. substitute ... (Read 20 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?

There are immediate benefits of chiropractic adjustments that are visible via magnetic resonance imaging (MRI). It shows that spinal manipulation therapy is effective in decreasing pain and increasing the gaps between the vertebrae, reducing pressure that leads to pain.

Did you know?

The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

Did you know?

The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.

Did you know?

The National Institutes of Health have supported research into acupuncture. This has shown that acupuncture significantly reduced pain associated with osteoarthritis of the knee, when used as a complement to conventional therapies.

Did you know?

The human body's pharmacokinetics are quite varied. Our hair holds onto drugs longer than our urine, blood, or saliva. For example, alcohol can be detected in the hair for up to 90 days after it was consumed. The same is true for marijuana, cocaine, ecstasy, heroin, methamphetamine, and nicotine.

Cards Used in a Socially Situated Version of the Problem-Solving Test Cards Used in a Socially Situated Version of the Problem-Solving Test
How to use your Fx-991ES Plus Calculator to find the roots of a quadratic equation How to use your Fx-991ES Plus Calculator to find the roots of a quadratic equation
How to solve a distance, time, speed problem using linear algebra How to solve a distance, time, speed problem using linear algebra
Write equation for each function Write equation for each function
Simplify Trig Equation Simplify Trig Equation
Genetics problem solved Genetics problem solved
Video: Anatomy and Chemical Makeup of a Single Hair (Animation)

For a complete list of videos, visit our video library