A company's annual income tax data for 2022 shows a mean annual employee income of $⁢60,000 , with a standard deviation of annual income of $⁢10,000 Assume that the incomes are normally distributed. What percentage of the company's employees have an annual income between $⁢50,000 and $⁢70,000 ?

The interval from $50,000 to $70,000 is $10,000 below and above the mean of $60,000. Since $10,000 is one standard deviation, this interval is within one standard deviation of the mean. For a normal distribution, about 68 percent of values lie within one standard deviation, so the answer is 68 percent.

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