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



Title: The nonparametric methods, or distribution-free methods as they are also known, do not depend on the ...
Post by: Anyy on Mar 3, 2018
The nonparametric methods, or distribution-free methods as they are also known, do not depend on the distribution of the population being sampled, but they depend on the distribution of the sample itself.
  Indicate whether the statement is true or false

Q. 2

When sampling without replacement, the appropriate probability distribution is:
 a. a binomial distribution
  b. a hypergeometric distribution
  c. a Poisson distribution
  d. all of these

Q. 3

Which of the following best defines an interval estimate?
 a. It is a sampling procedure that matches each unit from population A with a twin from population B so that any sample observation about a unit in population A automatically yields an associated observation about a unit in population B.
  b. It is an estimate of a population parameter that is expressed as a range of values within which the unknown but true parameter presumably lies.
  c. It is a sample statistic such that the mean of all its possible values equals the population parameter the statistic seeks to estimate.
  d. It is the sum of an estimator's squared bias plus its variance.
  e. It is the sum of an estimator's squared bias plus the population mean .

Q. 4

The Runs test is the nonparametric counterpart of the parametric t-test for two dependent means.
  Indicate whether the statement is true or false

Q. 5

A warehouse contains six parts made by company A and ten parts made by company B. If four parts are selected at random from the warehouse, the probability that all four parts are from company B is approximately .008.
  Indicate whether the statement is true or false

Q. 6

The lower limit of a confidence interval at the 95 level of confidence for the population proportion if a sample of size 100 had 30 successes is:
 a. 0.3898
  b. 0.2102
  c. 0.2959
  d. 0.3041
  e. 0.3126

Q. 7

When choosing between parametric and nonparametric tests, we are interested primarily in the control of error, the relative power of the test, and efficiency.
  Indicate whether the statement is true or false


Title: The nonparametric methods, or distribution-free methods as they are also known, do not depend on the ...
Post by: kkstudymore on Mar 3, 2018
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