Question

A certain machine makes electrical resistors having a mean resistance of 40 ohms and a variance of 4 ohms. Assuming that the resistance follows a normal distribution. What percentage of resistors will have


a. a resistance exceeding 43 ohms

b. a resistance between 40-42 ohms?

c. Find the resistance value at the 40th percentile.

Answer 1

Answer:

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Answer 2

$b) \: is \: correct \: \:$