(Choose 1 answer)
A nurse at a local hospital is interested in estimating the birth weight of infants. How large a sample must she select if she desires to be 90% confident that the true mean is within 4 ounces of the sample mean? The standard deviation of all birth weights is known to be 6 ounces.
A. 7
B. 2
C. 6
Let 20.05 1.645
D. None of the other choices is correct
Ε. 3
DIFUOn the exem.
