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 59 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
Excellent

amandanbreshears

  • Member
  • Posts: 320
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Sildenafil (Viagra®) has two actions that may be of consequence in patients with heart disease. It can lower the blood pressure, and it can interact with nitrates. It should never be used in patients who are taking nitrates.

Did you know?

Human kidneys will clean about 1 million gallons of blood in an average lifetime.

Did you know?

Congestive heart failure is a serious disorder that carries a reduced life expectancy. Heart failure is usually a chronic illness, and it may worsen with infection or other physical stressors.

Did you know?

There are major differences in the metabolism of morphine and the illegal drug heroin. Morphine mostly produces its CNS effects through m-receptors, and at k- and d-receptors. Heroin has a slight affinity for opiate receptors. Most of its actions are due to metabolism to active metabolites (6-acetylmorphine, morphine, and morphine-6-glucuronide).

Did you know?

There used to be a metric calendar, as well as metric clocks. The metric calendar, or "French Republican Calendar" divided the year into 12 months, but each month was divided into three 10-day weeks. Each day had 10 decimal hours. Each hour had 100 decimal minutes. Due to lack of popularity, the metric clocks and calendars were ended in 1795, three years after they had been first marketed.

The American Lion was one of the abundant Pleistocene megafauna, a wide variety of very large mammal The American Lion was one of the abundant Pleistocene megafauna, a wide variety of very large mammal
Large-Flowered Leafcup Large-Flowered Leafcup
A typical large tool box, showing just one of many drawers. A typical large tool box, showing just one of many drawers.
viable surface sampling by swab viable surface sampling by swab
(a) The distribution of sickle cell anemia in the Old World. (b) The distribution of malaria overlap (a) The distribution of sickle cell anemia in the Old World. (b) The distribution of malaria overlap
Light-independent reactions of photosynthesis Light-independent reactions of photosynthesis
Video: Structures that affect circulation - venous return

For a complete list of videos, visit our video library