here we have,
for 99% of CI, Z = 2.575
standard deviation, SD = sqrt(variance) = sqrt(9) = 3
margin of error, E = 1
required sample size, n = (Z*SD/E)2 = (2.575*3/1)2 = 59.68
correct option is n>=59.68
An astronomer is interested in measuring in light years, the distance from his observatory to a...
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