Multiple Choice
A recent survey found that 69% of all adults over 50 wear sunglasses for driving. In a random sample of 20adults over 50, what is the mean and standard deviation of those that wear sunglasses?
A) mean: 13.8; standard deviation: 2.06833266
B) mean: 13.8; standard deviation: 3.71483512
C) mean: 6.2; standard deviation: 2.06833266
D) mean: 6.2; standard deviation: 3.71483512
Correct Answer:
Verified
Correct Answer:
Verified
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