In studying the occurrence of genetic characteristics, the following sample data were obtained. You would like to test the claim that the characteristics occur with the same frequency at the 0.05 significance level.
$\begin{array} { l | c c c c c c }
\text { Characteristic } & \text { A } & \text { B } & \text { C } & \text { D } & \text { E } & \text { F } \
\hline \text { Frequency } & 28 & 30 & 45 & 48 & 39 & 39
\end{array}$
What is the expected value for D?
A) 28
B) 38
C) 42
D) 48

Question

In studying the occurrence of genetic characteristics, the following sample data were obtained. You would like to test the claim that the characteristics occur with the same frequency at the  0.05  significance level.
$\begin{array} { l | c c c c c c } 
\text { Characteristic } & \text { A } & \text { B } & \text { C } & \text { D } & \text { E } & \text { F } \
\hline \text { Frequency } & 28 & 30 & 45 & 48 & 39 & 39
\end{array}$
What is the expected value for D?
A) 28
B) 38
C) 42
D) 48

Quizplus · Accepted Answer

To find the expected value for each characteristic under the assumption that all characteristics occur with the same frequency, you first calculate the total number of observations (28 + 30 + 45 + 48 + 39 + 39 = 229) and then divide by the number of characteristics (6), which gives an expected value of 38.25 for each characteristic. Rounding is not mentioned, so the closest answer is 38.

In Studying the Occurrence of Genetic Characteristics, the Following Sample