SOLUTION:
Assume that 60% of the cars on a particular freeway are traveling faster than 70 miles per hour. A random sample of 15 cars was observed under normal driving conditions with no
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Question 724005:
Assume that 60% of the cars on a particular freeway are traveling faster than 70 miles per hour. A random sample of 15 cars was observed under normal driving conditions with no police car in sight. What is the probability that 8 or more of them were going faster than 70 miles per hour?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Assume that 60% of the cars on a particular freeway are traveling faster than 70 miles per hour. A random sample of 15 cars was observed under normal driving conditions with no police car in sight. What is the probability that 8 or more of them were going faster than 70 miles per hour?
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Binomial Problem with n = 15 and p(70+) = 0.60
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P(8<= x <=15) = 1 - binomcdf(15,0.60,7) = 0.7869
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Cheers,
Stan H.
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