solution
maximum error =2
Standard deviation=5.2
Confidence level =99%
Hence α=1%
The Z-score Zα/2=Z0.005=2.58
Sample size (n):
n=(Maximum ErrorZα/2∗Standard Deviation)2
=(22.58∗5.2)2=44.997
answer: the minimum number of clients required for the test is 45
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