Question 1

What three quantities do you need in order to calculate the independent samples t statistic?

Accepted Answer

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Question 2

Which statistic would you use if you are interested in comparing the mean number of hours worked by sex.

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Question 3

Define Type I and Type II error.

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Question 4

In a simple random sample of 120 women and 150 men from a population of 150,000,25% of the women and 37% of the men are smokers.Suppose you are interested in comparing the proportion of smokers by sex,compute the estimated standard error.

Accepted Answer

The answer of In a simple random sample of 120...

Question 5

Imagine you wish to determine whether the mean number of hours worked per week by men in a sample differs from the 40-hour standard.Use the information below to calculate the number of degrees of freedom associated with a single-sample t test.

Accepted Answer

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Question 6

Suppose you are interested in comparing the mean number of hours worked by sex.Use the information below to calculate the value of the independent samples t statistic.

Accepted Answer

The answer of Suppose you are interested in comparing the...

Question 7

In a simple random sample of 120 women and 150 men from a population of 150,000,25% of the women and 37% of the men are smokers.Suppose you are interested in comparing the proportion of smokers by sex,state the null and the research hypothesis.

Accepted Answer

The answer of In a simple random sample of 120...

Question 8

In a simple random sample of 120 women and 150 men from a population of 150,000,25% of the women and 37% of the men are smokers.Suppose you are interested in comparing the proportion of smokers by sex,compute the Z statistic.

Accepted Answer

The answer of In a simple random sample of 120...

Question 9

Suppose you are interested in comparing the mean number of hours worked by sex.State the null and the research hypotheses.

Accepted Answer

The answer of Suppose you are interested in comparing the...

Question 10

In a simple random sample of 120 women and 150 men from a population of 150,000,25% of the women and 37% of the men are smokers.Suppose you are interested in comparing the proportion of smokers by sex,do we accept or reject the null hypothesis of assuming the smoking proportions of women and men are the same with alpha .05?

Accepted Answer

The answer of In a simple random sample of 120...

Quiz 8: Testing Hypotheses

What three quantities do you need in order to calculate the independent samples t statistic?

Which statistic would you use if you are interested in comparing the mean number of hours worked by sex.

Define Type I and Type II error.

In a simple random sample of 120 women and 150 men from a population of 150,000,25% of the women and 37% of the men are smokers.Suppose you are interested in comparing the proportion of smokers by sex,compute the estimated standard error.

Imagine you wish to determine whether the mean number of hours worked per week by men in a sample differs from the 40-hour standard.Use the information below to calculate the number of degrees of freedom associated with a single-sample t test.

Suppose you are interested in comparing the mean number of hours worked by sex.Use the information below to calculate the value of the independent samples t statistic.

In a simple random sample of 120 women and 150 men from a population of 150,000,25% of the women and 37% of the men are smokers.Suppose you are interested in comparing the proportion of smokers by sex,state the null and the research hypothesis.

In a simple random sample of 120 women and 150 men from a population of 150,000,25% of the women and 37% of the men are smokers.Suppose you are interested in comparing the proportion of smokers by sex,compute the Z statistic.

Suppose you are interested in comparing the mean number of hours worked by sex.State the null and the research hypotheses.