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Science-Related Homework Help Statistics and Probability Topic started by: rimaaazzz on Mar 3, 2018



Title: Which of the following distributions is considered the cornerstone distribution of statistical ...
Post by: rimaaazzz on Mar 3, 2018
Which of the following distributions is considered the cornerstone distribution of statistical inference?
 a. Binomial distribution
  b. Normal distribution
  c. Poisson distribution
  d. Uniform distribution
  e. Geometric distribution

Q. 2

A sample of size 100 selected from one population has 60 successes, and a sample of size 150 selected from a second population has 95 successes. The test statistic for testing the equality of the population proportions equal to:
 a. -0.5319
  b. 0.7293
  c. -0.419
  d. 0.2702
  e. -0.3518

Q. 3

Which of the following is not true for a normal distribution?
 a. It is unimodal.
  b. It is symmetrical.
  c. It is discrete.
  d. It has a bell-shape.
  e. It is unimodal and discrete.

Q. 4

When the necessary conditions are met, a lower tailed test is being conducted for the difference between two population proportions. If the value of the test statistic is -2.50, then the p-value is 0.0062.
  Indicate whether the statement is true or false

Q. 5

If Z is a standard normal random variable, the area between z = 0.0 and z = 1.50 compared to the area between z = 1.5 and z = 3.0 will be:
 a. the same
  b. larger
  c. smaller
  d. zero
  e. none of these

Q. 6

When the necessary conditions are met, an upper tailed test is being conducted for the difference between two population proportions. If the value of the test statistic is 2.90, then the p-value is 0.0038.
  Indicate whether the statement is true or false

Q. 7

If Z is a standard normal random variable, the area between z = 0.0 and z = 1.30 is 0.4032, while the area between z = 0.0 and z = 1.50 is 0.4332 . What is the area between z = 1.30 and z = 1.50?
 a. 0.0300
  b. 0.0668
  c. 0.0968
  d. 0.8364
  e. 0.1428

Q. 8

When the necessary conditions are met, a two-tailed test is being conducted for the difference between two population proportions. If the value of the test statistic is -1.35, then the p-value is 0.0885.
  Indicate whether the statement is true or false


Title: Which of the following distributions is considered the cornerstone distribution of statistical ...
Post by: velicanercan1 on Mar 3, 2018
Content hidden


Title: Which of the following distributions is considered the cornerstone distribution of statistical ...
Post by: rimaaazzz on Mar 3, 2018
Oh god, I was lost before coming here. Thanksss


Title: Which of the following distributions is considered the cornerstone distribution of statistical ...
Post by: velicanercan1 on Mar 3, 2018
Great, make sure you mark the topic solved, it hides it from other eyes :)