Question: For a normal distribution, use Table A, software, or a calculator to find the probability that an observation is a. At least 1 standard deviation

For a normal distribution, use Table A, software, or a calculator to find the probability that an observation is
a. At least 1 standard deviation above the mean.
b. At least 1 standard deviation below the mean.
c. In each case, sketch a curve and show the tail probability.

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