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Given Exercise gave the following distribution for X = the number of meals eaten yesterday by individuals in a large population:
Meals, X
1
2
3
4
Probability
.10
.32
.56
.02
a. Calculate the expected value of X.
b. Write a sentence that interprets the expected value of X in this situation.
Exercise For a large population, probabilities for X = the number of meals eaten yesterday are:
a. Write a table that gives the cumulative probability distribution for X.
b. What is the value of P(X ≤ 2), the probability that a randomly selected person ate two or fewer meals yesterday?
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