A study is conducted to find a relationship between heavy alcohol use during the first trimester of pregnancy and miscarriage. 50 women who suffered miscarriage are enrolled along with 70 women who delivered full-term. Each participant's use of alcohol during pregnancy is found via survey. The data are shown here.

Miscarriage Delivered Full term

Heavy Alcohol use: 53 18

No Heavy Alcohol use: 24 45

1.What is the incidence of miscarriage in this study?

a.0.550

b.0.688

c.0.312

d.0.349

2.What is the incidence of miscarriage in heavy alcohol users?

a.0.746

b.0.312

c.0.348

d.0.688

3.What is the incidence of miscarriage in this study in non-heavy alcohol users?

a.0.746

b.0.312

c.0.348

d.0.688

4.What is the Relative Risk of miscarriage between heavy alcohol users and non-heavy alcohol users?

a.0.348

b.2.15

c.0.466

d.0.746

5.Data that has a less/same/more response is considered dichotomous data.

a.True

b.False

6.When data are negatively skewed, the mean would be ____ the median.

a.Greater than

b.Lower than

c.Equal to

d.Not enough information to answer this question.

7.A parameter is a numerical summary of a population.

a.True

b.False

8.If you have a sample of 20 data points, the fourth quartile would be the number in the position.

a.10^th

b.15^th

c.Between the 11^th and 12^th

d.Between the 10^th and 11^th

9.Which of the following is not a qualitative level of measurement?

a.Continuous

b.Categorical

c.Dichotomous

d.Ordinal

10.A sample of 5 body weights (lbs) is given: 116, 168, 124, 132, 110. The sample mean is:

a.124

b.116

c.132

d.130

11.A sample of 5 body weights (lbs) is given: 116, 168, 124, 132, 110. The sample variance is:

a.520

b.20.4

c.22.8

d.416