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

Author Question: The z test for independent groups is seldom used because _________. a. it lacks sensitivity b. ... (Read 54 times)

Redwolflake15

  • Hero Member
  • *****
  • Posts: 569
on: Jun 19, 2018
The z test for independent groups is seldom used because _________.
 
  a. it lacks sensitivity
  b. it is too complicated
  c. we seldom know the population variances
  d. the sampling distribution of z under H0 is unknown

Question 2

Having just made what you feel is to be a Type II error, using an independent groups design and a t test analysis, which of the following might you do in the next experiment to reduce the probability of a Type II error?
 
  a. increase N
  b. change to a correlated groups design
  c. try to reduce the variance by better experimental control
  d. all of these


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

heinisk01

  • Sr. Member
  • ****
  • Posts: 329
Reply #1 on: Jun 19, 2018
Answer to Question 1

C

Answer to Question 2

D


Redwolflake15

  • Member
  • Posts: 569
Reply 2 on: Jun 19, 2018
YES! Correct, THANKS for helping me on my review

at

  • Member
  • Posts: 359
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.

Did you know?

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

Did you know?

Over time, chronic hepatitis B virus and hepatitis C virus infections can progress to advanced liver disease, liver failure, and hepatocellular carcinoma. Unlike other forms, more than 80% of hepatitis C infections become chronic and lead to liver disease. When combined with hepatitis B, hepatitis C now accounts for 75% percent of all cases of liver disease around the world. Liver failure caused by hepatitis C is now leading cause of liver transplants in the United States.

Did you know?

Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.

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.

Weber Test Weber Test
Phalen’s test Phalen’s test
The obturator test The obturator test
Performing the Trendelenburg’s test: Applying tourniquet Performing the Trendelenburg’s test: Applying tourniquet
The gradient of the B allele of the ABO blood groups from East to West is due to waves of migration The gradient of the B allele of the ABO blood groups from East to West is due to waves of migration
Test of Yanofsky’s Proposed trp Operon Gene Order Test of Yanofsky’s Proposed trp Operon Gene Order
Video: Interview with Person having Obsessive Compulsive Disorder

For a complete list of videos, visit our video library