How many does jolt expect to replace on average

Reference no: EM13139366

It has been observed that electrical connectors that are manufactured by Jolt Electrical Supply Company last an average of 18.2 months and follow a normal distribution with a standard deviation of 1.7 months. Jolt agrees to replace any connector that fails within 19 months. Out of 500 connectors sold, how many does Jolt expect to replace on average?

Reference no: EM13139366

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