What sample size is needed to estimate with 95 percent confidence the mean intake of calcium within 20 units of the true mean if the intake is normal with a variance of 1900 units?
A)34,671
B)187
C)32
D)19

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The Answer of What sample size is needed to estimate with 95 percent confidence the mean intake of calcium within 20 units of the true mean if the intake is normal with a variance of 1900 units?
A)34,671
B)187
C)32
D)19

What Sample Size Is Needed to Estimate with 95 Percent