(1)

At Valencia College are male students more likely to be smokers than female students?

Group of answer choices

Testing a claim about a single population proportion.

Testing a claim about a single population mean.

Testing a claim that compares two population proportions.

Testing a claim that compares two population means.

(2)

For many years "working full-time" was 40 hours per week. A business researcher gathers data on the hours that corporate employees work each week. She wants to determine if corporations now require a longer work week.

Group of answer choices

Testing a claim about a single population proportion.

Testing a claim about a single population mean.

Testing a claim about two population proportions.

Testing a claim about two population means.

(3)

At Mt. San Antonio College, do less than half of students exercise at least 3 times per week?

Group of answer choices

Testing a claim about a single population proportion.

Testing a claim about a single population mean.

Testing a claim about two population proportions.

Testing a claim about two population means.

(4)

Does the type of employment make a difference in how much someone saves for retirement? A researcher gathers data on how much money government employees and corporate employees put in their retirement accounts each month as a percentage of their income.

Group of answer choices

Testing a claim about a single population proportion.

Testing a claim about a single population mean.

Testing a claim about two population proportions.

Testing a claim about two population means.

(5)

Smoking levels:According to the Centers for Disease Control and Prevention, the proportion of U.S. adults age 25 or older who smoke is .22. A researcher suspects that the rate is lower among U.S. adults 25 or older who have a bachelor's degree or higher education level.

What is the null hypothesis in this case?

Group of answer choices

The proportion of smokers among U.S. adults 25 or older who have a bachelor's degree or higher is less than .22.

The proportion of smokers among U.S. adults 25 or older who have a bachelor's degree or higher is .22.

The proportion of smokers among U.S. adults 25 or older who have a bachelor's degree or higher is not .22.

There is no relationship between education level and smoking habits.

(6)

Smoking levels:According to the Centers for Disease Control and Prevention, the proportion of U.S. adults age 25 or older who smoke is .22. A researcher suspects that the rate is lower among U.S. adults 25 or older who have a bachelor's degree or higher education level.

What is the alternative hypothesis in this case?

Group of answer choices

The proportion of smokers among U.S. adults 25 or older who have a bachelor's degree or higher is less than .22.

The proportion of smokers among U.S. adults 25 or older who have a bachelor's degree or higher is .22.

The proportion of smokers among U.S. adults 25 or older who have a bachelor's degree or higher is not .22.

There is a relationship between level of education level and smoking habits.

(7)

IQ levels:A study investigated whether there are differences between the mean IQ level of people who were reared by their biological parents and those who were reared by someone else.

What is the null hypothesis in this case?

Group of answer choices

The mean IQ level of people who were reared by their biological parents is higher than the mean of those who were not.

The mean IQ level of people who were reared by their biological parents is lower than the mean of those who were not.

There is no difference between the mean IQ levels of people who were reared by their natural parents and those who were not.

There is a difference between the mean IQ levels of people who were reared by their natural parents and those who were not.

(8)

IQ levels:Astudy investigated whether there are differences between the mean IQ level of people who were reared by their biological parents and those who were reared by someone else.

What is the alternative hypothesis in this case?

Group of answer choices

The mean IQ level of people who were reared by their biological parents is higher than the mean of those who were not.

The mean IQ level of people who were reared by their biological parents is lower than the mean of those who were not.

There is no difference between the mean IQ level of people who were reared by their natural parents and those who were not.

There is a difference between the mean IQ level of people who were reared by their natural parents and those who were not.

(9)

Valencia College:At Valencia College, are male students more likely to be smokers than female students?

What is the null hypothesis in this case?

Group of answer choices

The proportion of male Valencia College students who are smokers is less than the proportion of female Valencia College students who are smokers.

The proportion of male Valencia College students who are smokers is greater than the proportion of female Valencia College students who are smokers.

There is no difference between the proportion of male Valencia College students who are smokers and the proportion of female Valencia College students who are smokers.

There is a difference between the proportion of male Valencia College students who are smokers and the proportion of female Valencia College students who are smokers.

(10)

Valencia College:At Valencia College, are male students more likely to be smokers than female students?

What is the alternative hypothesis in this case?

Group of answer choices

The proportion of male Valencia College students who are smokers is greater than the proportion of female Valencia College students who are smokers.

There is no difference between the proportion of male Valencia College students who are smokers and the proportion of female Valencia College students who are smokers.

The proportion of male Valencia College students who are smokers is less than the proportion of female Valencia College students who are smokers.

There is a difference between the proportion of male Valencia College students who are smokers and the proportion of female Valencia College students who are smokers.