Author Question: An investigator would like to conduct an independent samples t-test to compare means between two ... (Read 91 times)

burton19126

  • Hero Member
  • *****
  • Posts: 532
An investigator would like to conduct an independent samples t-test to compare means between two samples. The sample size for each sample is 10.
 
  Upon initial evaluation it is found that both samples are not likely to be drawn from normally distributed populations. Further, investigation resulted that the population variances are unknown and are quite different. Should the investigator continue with the analysis? Why or why not?

Question 2

Positive correlation leads to small values of d, with 0 being the lower limit.
 
  Indicate whether the statement is true or false


swimkari

  • Sr. Member
  • ****
  • Posts: 332
Answer to Question 1

No. Although the population variances are unknown and are not equal, the t-test is not applicable because the populations from which the independent samples are taken are found to be nonnormal. Also, the central limit theorem is not helpful with a small sample size of 10. Therefore, the investigator might consider nonparametric tests that do not require normal distributions.

Answer to Question 2

TRUE



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

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?

Famous people who died from poisoning or drug overdose include, Adolf Hitler, Socrates, Juan Ponce de Leon, Marilyn Monroe, Judy Garland, and John Belushi.

Did you know?

Your chance of developing a kidney stone is 1 in 10. In recent years, approximately 3.7 million people in the United States were diagnosed with a kidney disease.

Did you know?

The top 10 most important tips that will help you grow old gracefully include (1) quit smoking, (2) keep your weight down, (3) take supplements, (4) skip a meal each day or fast 1 day per week, (5) get a pet, (6) get medical help for chronic pain, (7) walk regularly, (8) reduce arguments, (9) put live plants in your living space, and (10) do some weight training.

Did you know?

Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.

For a complete list of videos, visit our video library