SOLUTION: The percentage of substandard rivets on a bridge is 1% and the allowable percentage is 0.6%. if 400 rivets are randomly selected for inspection, what is the probability of the conc
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Question 870265: The percentage of substandard rivets on a bridge is 1% and the allowable percentage is 0.6%. if 400 rivets are randomly selected for inspection, what is the probability of the conclusion being drawn that the rivet population is substandard? Use the poisson approximation of the binomial distribution. Answer by ewatrrr(24785) (Show Source):
You can put this solution on YOUR website! allowable percentage .6, average 2.4 (sample 400)
at 1% , average 4 (sample of 400)
Average 2.4,
POISSON( x ≥ 3) = 1 - poissoncdf( 2.4, 2) = .4303
