Solve the Problem A)No the Distribution Is J-Shaped

question 25

Multiple Choice

Solve the problem.
-Frequency data were reported for the ages of women who became mothers during one year in a selected U.S. city. The age distribution is given in the table. Obtain a relative-frequency histogram
Of these data and determine whether the ages are approximately normally distributed. $$\begin{array} { c | c } \begin{array} { c } \text { Age } \\\text { (yrs) }\end{array} & \text { Frequency } \\\hline \text { 15-under 20 } & 101 \\\text { 20-under 25 } & 270 \\\text { 25-under 30 } & 285 \\30 \text {-under 35 } & 479 \\35 \text {-under 40 } & 867 \\40 \text {-under 45 } & 1021 \\45 \text {-under 50 } & 225 \\50 \text {-under 55 } & 56\end{array}$$

• A)No. The distribution is J-shaped.
• B)No. The distribution is left-skewed.
• C)Yes. The distribution is bell-shaped.
• D)No. The distribution is right-skewed.

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Definitions:

Conditioning

A behavioral process whereby a response becomes more frequent or predictable in a given environment due to reinforcement.

Twin Studies

A research method in which researchers assess hereditary influence by comparing the resemblance of identical twins and fraternal twins on a trait.

Hereditary Influences

The impact of genetic factors inherited from parents on an individual's traits, behavior, and health.

Identical Twins

Twins that develop from a single fertilized egg that splits and forms two embryos, sharing 100% of their DNA.