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A human resource manager at a large company wants to estimate the proportion of employees that would be interested in reinbursement for college courses. If she wishes to be 95% confident that her estimate is within 5% of the true proportion, how many employees would need to be sampled?
A. 1234
B. 646
C. 543
D. 385
E. 271
According to an early CDC study of 21 patients infected with the swine flu, the average incubation period was 7 days with a sample standard deviation of 4.5 days.
We are interested in determining whether or not the opinions of the individuals (as to Yes, No, and No Opinion) are uniformly distributed.
Use the method of least squares to model the relationship between x and y.
through the week ending september 162011 tiger woods was the leading money winner on the pga tour with total earnings
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The weights of canned hams processed at Henline Ham Company follow the normal distribution, with a mean of 9.20 pounds and a standard deviation of .25 pounds. The label weight is given as 9.00 pounds
Assume that the duration of human pregnancies can be described by a normal model with mean 268 days and standard deviation 17 days. What percentage of pregnancies should last between 260 and 270 days?
the pizza shop wanted to determine what proportion of its customers ordered only cheese pizza. out of the 80 customers
Can we conclude from this that most workers there earn between $25 and $35 per hour? Is this the right interpretation for the margin of error?
Assume that the bricks used are randomly chosen from a population of bricks whose mean length is 10 inches and whose standard deviation is 1/32 inch.
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