A manufacturing process resulted in a batch of 10 K resistors. The mean resistance values was 10 Kê with a standard deviation of 500 ê.
a. What is the normal distribution of the resistance values if the lot size was 20,000 resistors?
b. If these were to be 10% tolerance resistors, how many would have to be rejected for not meeting specifications?
a. Resistance Value Number of resistors
10,500 ê - 11,000 ê 2,700
10,000 ê - 10,500 ê 6,800
9,500 ê - 10,000 ê 6,800
9,000 ê - 9,500 ê 2,700
b. 1,000
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