A medical researcher wants to estimate the difference in the proportions of women with high blood pressure for women who use oral contraceptives versus women who do not use oral contraceptives. In an observational study involving a sample of 700 women, the researcher finds that 0.16 (16%) of the 400 women who used oral contraceptives had high blood pressure, whereas only 0.11 (11%) of the 300 women who did not use oral contraceptives had high blood pressure. Required:
a. What is the research question of interest for this study?
b. What is the population parameter in this study? What is the appropriate statistical notation for this parameter?
c. What is the value of the sample estimate (statistic) in this study?
d. What is the appropriate statistical notation for this estimate?

1.) Difference between the proportion of women with high blood pressure who use oral contraceptive and those who don't use oral contraceptive.

2.)

Difference between the Total proportion of women with high blood pressure who use oral contraceptives, P1 and

Total proportion of women with high high blood pressure who don't use oral contraceptive, P2

P1 - P2

3.)

Difference between the proportion of the 700 women with high blood pressure who use oral contraceptives, Phat1 and

those who don't use oral contraceptive, Phat2

4.)

Phat1 - Phat 2

0.16 - 0.11 = 0.05

Step-by-step explanation:

1.

The question the research intends to answer is : " Difference between the proportion of women with high blood pressure who use oral contraceptive and those who don't use oral contraceptive."

Population parameter will be :

Difference between the Total proportion of women with high blood pressure who use oral contraceptives, P1 and

Total proportion of women with high high blood pressure who don't use oral contraceptive, P2

P1 - P2

3.)

Sample statistic:

Difference between the proportion of the 700 women with high blood pressure who use oral contraceptives, Phat1 and

those who don't use oral contraceptive, Phat2

Phat1 - Phat 2