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Question 14 For all tests of hypothesis, the probability of rejecting the null hypothesis is a...

Question 14

  1. For all tests of hypothesis, the probability of rejecting the null hypothesis is a function of

    A.

    the size of the observed differences

    B.

    the alpha level and the use of one- or two-tailed tests

    C.

    sample size

    D.

    all of the above

Question 15

  1. The Central Limit Theorem states that as sample size becomes large the population distribution becomes normal.

    True

    False

Question 16

  1. The area between the mean and a Z score of + 1.50 is 43.32%. This score is higher than ________ of the scores in the distribution.

    A.

    51.50%

    B.

    93.32%

    C.

    43.32%

    D.

    57.68%

Question 17

  1. Parameter is a numerical descriptive measure of a sample, while a statistic is a numerical descriptive measure of a population.

    True

    False

Homework Answers

Answer #1

Question 14

  1. For all tests of hypothesis, the probability of rejecting the null hypothesis is a function of

This probability completely depends upon alpha and type of test

the alpha level and the use of one- or two-tailed tests

Question 15

  1. The Central Limit Theorem states that as sample size becomes large the population distribution becomes normal

The CLT states that as n tends to infinity the distribution tends to normal

True

Question 16

  1. The area between the mean and a Z score of + 1.50 is 43.32%. This score is higher than ________ of the scores in the distribution.

Area below mean is 50%

Area below the point = 50 + 43.32 = 93.32%

Question 17

  1. Parameter is a numerical descriptive measure of a sample, while a statistic is a numerical descriptive measure of a population.

The parameter is population value and statistics is sample value

False

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