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1 2345 67 89 10 14 15 16 17 18 19 20 2122 23 24 25 Submit Test time remaining: 1 Question #13 / 25 Anita's, a fast-food chain specializing in hot dogs and garlic fries, keeps track of the proportion of its customers who decide to eat in the restaurant (as opposed to ordering the food "to go") so it can make dedisions regarding the possible construction of in-store play areas, the attendance of its mascot Sammy at the franchise locations, and so on. Anita's reports that 45% of its customers order their food to go. Suppose that this proportion is correct and that a random sample of 50 individual customers is taken. a. Estimate the number of customers in the sample who order their food to go by giving the mean of the relevant distribution (that is, the expectation of the relevant random variable). Do not round your response. b. Quantry the uncertainty of your cestimate by diving the standard deviation of the distribution. (If necessary, consult a list of formulas.) b. Clear Undo Help ee Prev. Question Next Question >> 4 6

Explanation / Answer

Here total sample size n = 50

proportion of customers ordered their food to go = 0.45

(a) Expected number of customeres ordertheir food to go = 50 * 0.45 = 22.50

(b) Uncertainty or standard deviation = sqrt (50 * 0.45 * 0.5) = 3.52

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