Researchers want to see if men have a higher blood pressure than women do. A study is planned in which the blood pressures of 50 men and 50 women will be measured. What's the most appropriate alternative hypothesis about the means of the men and women?
A) The sample means are the same.
B) The sample mean will be higher for men.
C) The population means are the same.
D) The population mean is higher for men than for women.

Question

Quizplus · Accepted Answer

The alternative hypothesis is a statement that there is a difference, relationship, or effect in the general population from which the sample is drawn. In this case, stating that the population mean blood pressure is higher for men than for women (D) directly addresses the research question about a potential difference in blood pressure between genders in the general population, not just the sample.

Researchers Want to See If Men Have a Higher Blood