« previous next »

Author Question: To develop a confidence interval for the difference between the means of two populations which are ... (Read 35 times)

Coya19@aol.com

  • Hero Member
  • *****
  • Posts: 601
on: Jun 24, 2018
To develop a confidence interval for the difference between the means of two populations which are normally distributed and have equal variances, two independent samples of sizes n1 and n2 are randomly selected from the two populations.
 
  What is the formula used to determine the number of degrees of freedom for the t distribution?A) n1 + n2
  B) n1 + n2 - 1
  C) n1 + n2 - 2
  D) n1 + n2 + 1

Question 2

The value of the F-test statistic is:
 
  A) 1.50
  B) 18.05
  C) 12.05
  D) 3.47


Meganchabluk

  • Sr. Member
  • ****
  • Posts: 301
Reply #1 on: Jun 24, 2018
Answer to Question 1

C

Answer to Question 2

C


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Carbamazepine can interfere with the results of home pregnancy tests. If you are taking carbamazepine, do not try to test for pregnancy at home.

Did you know?

Cucumber slices relieve headaches by tightening blood vessels, reducing blood flow to the area, and relieving pressure.

Did you know?

Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.

Did you know?

An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.

Did you know?

Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.

Flower part number is a characteristic difference between monocots and eudicots (a) Flowers and buds Flower part number is a characteristic difference between monocots and eudicots (a) Flowers and buds
Fibroid tumors, or leiomyomas. Fibroids develop from the uterus to form a variety of hard, round ben Fibroid tumors, or leiomyomas. Fibroids develop from the uterus to form a variety of hard, round ben
How to use the closed interval method to find absolute maximum and minimum values How to use the closed interval method to find absolute maximum and minimum values
Young recent immigrants often develop two identities Young recent immigrants often develop two identities
Distribution of glucose-6-phosphate dehydrogenase (G6PD) deficiency in various Jewish populations. B Distribution of glucose-6-phosphate dehydrogenase (G6PD) deficiency in various Jewish populations. B
A phylogenetic tree showing that all non-African human populations share a closer genetic relationsh A phylogenetic tree showing that all non-African human populations share a closer genetic relationsh
Video: Fertilization and Development

For a complete list of videos, visit our video library