MHT CET · Maths · Statistics
In a pizza hut, the following distribution is found for the daily demand of pizzas.
Then expected daily demand and variance are respectively
- A 7.28 and 1.52
- B 1.52 and 7.28
- C 7.28 and 54.52
- D 7.28 and 53
Answer & Solution
Correct Answer
(A) 7.28 and 1.52
Step-by-step Solution
Detailed explanation
Mean \(=\Sigma P_i x_i=7.28\)
and variance \(=\Sigma \mathrm{P}_{\mathrm{i}} \mathrm{x}_{\mathrm{i}^2}-\left(\Sigma \mathrm{P}_{\mathrm{i}} \mathrm{x}_{\mathrm{i}}\right)^2=54.52-53=1.52\)
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