Question

Asked Nov 26, 2019

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34% adults favor the use of unmanned drones by police agencies. Twelve U.S. adults are randomly selected. Find the probability that the number of U.S. adults who favor the use of unmanned drones by police agencies is (a) exactly three, (b) at least four, (c) less than eight.

Step 1

From the given information,

Binomial parameters, n = 12 and P=34% .034.

Here we can use binomial distribution probability.

Let ‘X’ be a binomial random variable.

Formula for binomial probability is,

Step 2

Now,

(a) P(x=3) is,

Step 3

(b) P (at least...

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