Children between the ages
It is estimated that 56% of the children between the ages of 3 and 5 years are already enrolled in school. In a sample of 150 children what is the probability that exactly 100 are enrolled in school?
A. 0.667
B. 0.002
C. 0.997
D. 0.998
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If an exercise scientist wants to estimate the proportion of American adults who exercise for 30 minutes three or more times per week. He wants to construct a 90% confidence interval with a margin of error of 1%.
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A fair coin is tossed 500 times. Find the probability of obtaining more than 300 heads.
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