Mathematics > EXAMs > MATH 221 Week 5 40 POINT (All)
MATH 221 Week 5 40 POINT
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From a random sample of 58 businesses, it is found that the mean time the owner spends on administrative issues each week is 21.69 with a standard deviation of 3.23. What is the 95% confidence inter v ... al for the amount of time spent on administrative issues? (20.71, 22.67) (21.78, 22.60) (19.24, 24.14) (20.86, 22.52) Question 2 2 / 2 pts If a confidence interval is given from 43.83 up to 61.97 and the mean is known to be 52.90, what is the maximum error? 18.14 43.83 9.07 4.54 IInccorrrreecctt Question 3 0 / 2 pts If a car manufacturer wanted lug nuts that fit nearly all the time, what characteristics would be better? wide confidence interval with low confidence level [Show More]
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