Author Question: In a study, 35 of adults questioned reported that their health was excellent. A researcher wishes to ... (Read 104 times)

ts19998 · **on:** Jul 25, 2018

In a study, 35 of adults questioned reported that their health was excellent. A researcher wishes to study the health of people living close to a nuclear power plant.

Among 11 adults randomly selected from this area, only 3 reported that their health was excellent. Find the probability that when 11 adults are randomly selected, 3 or fewer are in excellent health.
A) 0.2001 B) 0.2254 C) 0.4256 D) 0.3041

Question 2

A computer manufacturer wishes to estimate what proportion of their laptop computers are defective. Obtain a sample size that will ensure a margin of error of at most 3.5 percentage points for a 95 confidence interval.

A) 785 B) 3137 C) 28 D) 197