Dr. Nunez wants to estimate the average lung capacity of adults in her state. She plans on taking a sample of n adults to construct a 99% confidence interval for the mean lung capacity. She wants the margin of
error to be no more than 100 mL. She's willing to use o = 300 mL as an estimate for the population
standard deviation.
Which of these is the smallest approximate sample size required to obtain the desired margin of error?
Choose 1
35 adults
B
45 adults
50 adults
55 adults