SOLUTION: Nielsen Media Group announced that slightly more than 10% of all televisions were tuned to the final round of the Masters Golf Tournament in Augusta, GA. Assuming the 10% rate is

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Question 753934: Nielsen Media Group announced that slightly more than 10% of all televisions were tuned to the final round of the Masters Golf Tournament in Augusta, GA. Assuming the 10% rate is correct, what is the probability that in a random sample of 20 television sets, 2 or fewer would have been tuned to the Masters?
A. 0.7334
B. 0.6769
C. 0.3917
D. 0.2852
Answer by reviewermath(1029) About Me  (Show Source):
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Q:
Nielsen Media Group announced that slightly more than 10% of all televisions were tuned to the final round of the Masters Golf Tournament in Augusta, GA. Assuming the 10% rate is correct, what is the probability that in a random sample of 20 television sets, 2 or fewer would have been tuned to the Masters?
A. 0.7334
B. 0.6769
C. 0.3917
D. 0.2852
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A:
X~Binomial(20,0.1)
P(X ≤ 2) = sum%28%28matrix%282%2C1%2C20%2Cx%29%29%280.1%5Ex%29%280.9%29%5E%2820+-+x%29%2C+x+=+0%2C+2%29 = highlight%280.6769%29