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

Author Question: If two independent large samples are taken from two populations, the sampling distribution of the ... (Read 93 times)

Brittanyd9008

  • Hero Member
  • *****
  • Posts: 500
on: Aug 1, 2018
If two independent large samples are taken from two populations, the sampling distribution of the difference between the two sample means
 a. can be approximated by any distribution.
  b. will have a variance of one.
  c. can be approximated by a normal distribution.
  d. will have a mean of one.

Question 2

Two independent simple random samples are taken to test the difference between the means of two populations whose standard deviations are not known, but are assumed to be equal. The sample sizes are n1 = 25 and n2 = 35 . The correct distribution to use is the
 a. t distribution with 61 degrees of freedom.
  b. t distribution with 60 degrees of freedom.
  c. t distribution with 59 degrees of freedom.
  d. t distribution with 58 degrees of freedom.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Laurenleakan

  • Sr. Member
  • ****
  • Posts: 309
Reply #1 on: Aug 1, 2018
Answer to Question 1

c

Answer to Question 2

d


Brittanyd9008

  • Member
  • Posts: 500
Reply 2 on: Aug 1, 2018
Great answer, keep it coming :)

bitingbit

  • Member
  • Posts: 323
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.

Did you know?

More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.

Did you know?

Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.

Did you know?

Pregnant women usually experience a heightened sense of smell beginning late in the first trimester. Some experts call this the body's way of protecting a pregnant woman from foods that are unsafe for the fetus.

Did you know?

Aspirin may benefit 11 different cancers, including those of the colon, pancreas, lungs, prostate, breasts, and leukemia.

Possible interactions among populations. Possible interactions among populations.
Although large, the cougar is more closely related to smaller felines. Although large, the cougar is more closely related to smaller felines.
China's proposed supercollider plans to be twice the size of the Large Hadron Co China's proposed supercollider plans to be twice the size of the Large Hadron Co
IQ scores form what mathematicians call a normal distribution "bell curve" IQ scores form what mathematicians call a normal distribution "bell curve"
Population distribution patterns Population distribution patterns
Video: Exercise and cardiac output & Definition of stroke volume

For a complete list of videos, visit our video library