A manufacturer tested a sample of semiconductor chips and found that 35 were defective and 190 were good. If additional tests are to be conducted with random samples of 160 semiconductor chips, find the mean for the number of defects in these groups of 160 (rounded to the nearest whole number).
A) 56
B) 35
C) 29
D) 25

Question

Quizplus · Accepted Answer

Sample size = 35 + 190 = 225
p = 35/225 = .156
Mean of 160 groups = 160(.156) = 24.96, rounded to 25

A Manufacturer Tested a Sample of Semiconductor Chips and Found