Exam 8: Testing Hypotheses

The 40-hour work week is considered the standard in American society today.Imagine you wish to use data from the 2010 General Social Survey to determine whether the mean number of hours worked per week by men in the sample differs from the 40-hour standard.What test statistic should you compute and why?

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

The probability associated with rejecting the null hypothesis when it is true is called

A ______ test is conducted when we have no theoretical reason for specifying a direction in the research hypothesis.

The 40-hour work week is generally considered as a standard in American society today.Using data from the 2010 General Social Survey,you wish to determine whether the mean number of hours worked per week by men in the sample differs from the 40-hour standard.State the null and research hypotheses for this 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.

If variables are measured at the nominal or ordinal levels,then they are described in terms of proportions or percentages.

SELECT ALL THAT APPLY. -A research hypothesis (H₁)is said to be a

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 two-sample case,the samples are assumed to be dependent on each other.