A machine cuts circular filters from large rolls of material. If 7.3% of the filters fail to meet the specifications, use the normal approximation to the binomial to compute the probability that a sample of 100 of the filters will contain 5 or fewer that fail to meet specifications.
Please check my answer. I am not sure.
1. sameple space is 100 and 7.3% fails, the failing filters are about 7.3 for every 100 filters.
2. The probability of having less than 5 failing filters is impossible because we already know that for every 100, at least 7.3 filters fail to meet the specification.
p(5 or less)=0