Multiple Choice
A researcher conducted a study of the access speed of 45 hard drives and concluded that his maximum error of estimate was 20. If he were to conduct a second study to reduce the maximum error of estimate to 5, about how many hard drives should he include in his new sample?
A) 45
B) 90
C) 180
D) 720
Correct Answer:
Verified
Correct Answer:
Verified
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