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At a computer manufacturing company, the actual size of computer chips is normally distributed with a mean of 1 centimeter and a standard deviation of

At a computer manufacturing company, the actual size of computer chips is normally distributed with a mean of 1 centimeter and a standard deviation

of 0.1 centimeter. A random sample of 12 computer chips is taken.

a. What is the standard error of the sample mean?

b. What is the probability that the sample mean will be between 0.99 and 1.01 centimeters?

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