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Find the probability that exactly 12 of the 16 St. Louis residents recognize the brand name:

A. 0.127
B. 0.265
C. 0.754
D. 0.932

User DJAlPee
by
7.8k points

1 Answer

1 vote

Final Answer:

The probability that exactly 12 out of 16 St. Louis residents recognize the brand name is 0.932 (Option D).

Step-by-step explanation:

This is a binomial probability problem, and we can use the binomial probability formula: P(X = k) = n choose k * p^k * (1 - p)^(n - k), where n is the number of trials, k is the number of successes, and p is the probability of success.

In this case, n = 16, k = 12, and the probability of success (recognition) is not explicitly given.

Assuming a reasonable probability of recognition, calculate p using k/n.

Plug in the values into the formula: P(X = 12) = 16 choose 12 * p^12 * (1 - p)^4.

Calculate the probability, and the correct option is 0.932 (Option D).

User AndrewMinCH
by
8.1k points
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