Determine certain plant are defective
Two percent of hair dryers produced in a certain plant are defective. Estimate the probability that of 10,000 randomly selected hair dryers, exactly 225 are defective.
a) .0034
b) .0057
c) .0065
d) .0051
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The probability is .15 that the bottle of certain soda is under-filled, independent of amount of soda in other bottles. If machine one fills 100 bottles and machine two fills 80 bottles of this soda per hour
A typing competency test yield scores with sample mean of 80.0 and standard deviation of 10.0 and histogram shows that distribution is roughly bell-shaped. Employ the empirical rule to answer.
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Every well capped(shut down) would increase producton of every remaining well by eight barrels per day. Model oilfield's daily production function f(x), where x is number of wells drilled (x>0) or capped (x<0).
Determine the probability that sampling error made in Determining the mean monthly expenditure of all single adults in that city by the mean of the random sample of 90 such adults will be at most $10?
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Good characters employ tobacco and alcohol as frequently as bad characters. Cigars and wine are shown in these films more often than other tobacco or alcohol substances.
Is it proper to employ the z-statistic for this test? Explain your answer. Describe the meaning of the p-value in this problem.
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