Cattle Are Classified According to Age (Young, Medium, and Old)

question 67

Multiple Choice

Cattle are classified according to age (young, medium, and old) and carcass quality (grades A, B, and C) . In one study, the animals were classified as :
$\begin{array}{lccccl} & \text { Grade A } & 75 & \text { medium } & \text { old } & \text { Total } \\& \text { Grade B } & 100 & 80 & 25 & 180 \\& \text { Grade C } & 75 & 20 & 30 & 150 \\\text { Total } & 250 & 50 & 45 & 170 \\& & 150 & 100 & 500\end{array}$
The chi-square statistic for testing if there is an association between age and carcass quality was calculated. What is the expected frequency for the $( 2,2 )$ cell?

• A) 26
• B) 45
• C) 60
• D) 90

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