Chapter 4.2, Problem 30AYU

(a)

To determine

To identify: The type of distribution.

To determine

The class width.

(b)

To determine

To identify: The type of experiment.

(c)

To determine

To explain: Whether the study is a prospective study.

(d)

To determine

To identify: The reason of urinalysis to measure the cotinine levels.

(e)

To determine

To identify: The explanatory variable.

To determine

To identify: The dependent variable.

To determine

To identify: Whether the independent variable is qualitative or quantitative.

To determine

To identify: Whether the response variable is qualitative or quantitative

(f)

To determine

To identify: The type of relationship between the variables.

(g)

To determine

The regression equation.

(h)

To determine

To interpret: The slope.

(i)

To determine

To interpret: The $y\text{<mo>−</mo>intercept}$.

(j)

To determine

To explain: Whether the model can be used for the provided situation.

(k)

To determine

To explain: The effect of smoking on the birth weight of the baby.

(l)

To determine

To identify: The lurking variable.