What is the smallest sample size required to provide a 95% confidence interval for a mean, if the margin of error is 1 cm from the mean. You may assume that the population is normal with variance 9cm2. A 139 В 1245 C) 35 D) 95

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What is the smallest sample size required to provide
a 95% confidence interval for a mean, if the margin
of error is 1 cm from the mean. You may assume
that the population is normal with variance 9cm².
A
139
В
1245
с) 35
D) 95
Transcribed Image Text:What is the smallest sample size required to provide a 95% confidence interval for a mean, if the margin of error is 1 cm from the mean. You may assume that the population is normal with variance 9cm². A 139 В 1245 с) 35 D) 95
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