a. Given a random sample of 70 resistors, what is the probability that its mean is between 218 N and 223 Ω? b. What is the probability that two samples 50 and 60 resistors, taken by random, will differ in their mean by more than 5 N.

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The mean and standard deviation of the resistors are given by u = 220 N and o = 11 .
a. Given a random sample of 70 resistors, what is the probability that its mean is between 218 n
and 223 N?
b. What is the probability that two samples 50 and 60 resistors, taken by random, will differ in
their mean by more than 5 N.
Transcribed Image Text:The mean and standard deviation of the resistors are given by u = 220 N and o = 11 . a. Given a random sample of 70 resistors, what is the probability that its mean is between 218 n and 223 N? b. What is the probability that two samples 50 and 60 resistors, taken by random, will differ in their mean by more than 5 N.
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