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A normal population has a mean 100 and variance 25. How large must the sample size be if we want the standard error of the sample average to be at most 1.5? The sample size is an integer value.
A normal population has a mean 100 and variance 25. How large must the sample size be if we want the standard error of the sample average to be at most 1.5? The sample size is an integer value.
Answer:A sample size of 12 or more will give a standard error of atmost 1.5.Step-by-step explanation:We aregiven the followingin the question:Population mean = 100Variance = 25Thus, the standard deviation is 5.Formula:Standard error =Putting values, we get,Thus, a sample size of 12 or more will give a standard error of atmost 1.5....
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