Author Question: In one US city, the incidence of high blood pressure amongst those aged between 30 and 45 is 22. A ... (Read 64 times)

tiara099 · **on:** Aug 1, 2018

In one US city, the incidence of high blood pressure amongst those aged between 30 and 45 is 22. A researcher would like to investigate whether the incidence is higher amongst information technology employees, who work in a high-stress environment.

Among 200 information technology employees aged between 30 and 45, it was found that 59 had high blood pressure. If we assume that this the work environment does not affect blood pressure, would this be an unusual result?
A) Yes B) No

Question 2

An experiment involving a gender-selection method includes a control group of 15 couples who are not given any treatment intended to influence the genders of their babies. Each of the 15 couples has one child.

If the couples have 11 girls and 4 boys, is that result unusual?
A) Yes B) No