Suppose the sediment density (g/cm) of a randomly selected specimen from a certain region is normally distributed
Question:
a. If a random sample of 25 specimens is selected, what is the probability that the sample average sediment density is at most 3.00? Between 2.65 and 3.00?
b. How large a sample size would be required to ensure that the first probability in part (a) is at least .99?
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a b From which n 3202 Thus ...View the full answer
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Related Book For 
Probability And Statistics For Engineering And The Sciences
ISBN: 9781305251809
9th Edition
Authors: Jay L. Devore
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