Making a Conclusion in Statistics

The area of the shaded region in the graph is …

If P-value (right-tail) < \frac{\alpha}{2} , then we conclude …

• There is sufficient evidence to accept the null hypothesis

• There is insufficient evidence to accept the null hypothesis

• There is insufficient evidence to reject the null hypothesis

• There is sufficient evidence to reject the null hypothesis

Determine the correct order of hypothesis testing.

• D-A-B-C

• A-C-D-B

• A-D-C-B

• D-C-B-A

A college conducted a survey of randomly selected freshman about their choice of major. The table shows the results of the survey.

What inference about all freshman at this college is best supported by this information?

• The number of freshmen who chose English as their major is less than the number of freshmen who are Undecided on their major.

• The number of freshmen who chose Education as their major is greater than the number of freshmen who chose Science or Other as their major.

• The number of freshmen who chose Business or Education as their major is less than the number of freshmen who chose Science or Engineering as their major.

• The number of freshmen who chose Business as their major is greater than the number of freshmen who chose English as their major.

A college conducted a survey of randomly selected freshman about their choice of major. The table shows the results of the survey. What inference about all freshman at this college is best supported by this information?

• The number of freshmen who chose English as their major is less than the number of freshmen who are Undecided on their major.

• The number of freshmen who chose Education as their major is greater than the number of freshmen who chose Science or Other as their major.

• The number of freshmen who chose Business or Education as their major is less than the number of freshmen who chose Science or Engineering as their major.

• The number of freshmen who chose Business as their major is greater than the number of freshmen who chose English as their major.

A statistical method concerned with the analysis of a sample data leading to prediction, inferences, interpretation, or conclusion about the entire population.

Tell if the statement if Descriptive or Inferential

The chances of you getting a new car is about the same as passing your math class.

• Descriptive

• Inferential

The average annual salary for 35 of a company's 1200 accountants is $68,000.

• parameter

• statistic

Determine whether the numerical value is a parameter or statistic:

A survey of 2514 college board members found that 38% think that higher education costs what it should relative to its value.

• Parameter

• Statistic

A prediction has been made that the chance that a person will be robbed in a certain city is 15%.

• Inferential

• Descriptive