The Partially Completed Contingency Table Below Shows "Observed" Frequencies in a Sample

question 84

Multiple Choice

The partially completed contingency table below shows "observed" frequencies in a sample of size 200: Fill in the table below with the "expected" cell frequencies if Factor X and Factor Y are independent.
Report the value of the chi-square statistic that would be produced if we were to use the information in the tables to test the null hypothesis that the two factors shown are independent.

• A)2.48
• B)6.33
• C)1.59
• D)14.47

---

Definitions:

Timing of Puberty

Refers to the period during which adolescents undergo physical and hormonal changes that lead to sexual maturity.

Precocious Puberty

A condition where a child's body begins changing into that of an adult (puberty) too soon, before the age of 8 in girls and 9 in boys.

Growth Spurt

A quick growth in stature and mass, usually happening in adolescence.

Recommended Amount

The quantity of something suggested for optimal health or performance, often found in dietary or exercise guidelines.