The interval about the mean of data within one standard deviation is (23, 27)
The given parameters are:
Mean = 25
Standard deviation = 2
The interval about the mean of data within one standard deviation is calculated as:
Interval = Mean ± 1 * Standard deviation
Substitute the known values in the above equation
Interval = 25 ± 1 * 2
Evaluate the product
Interval = 25 ± 2
Evaluate the sum and the difference
Interval = (25 - 2, 25 + 2)
Evaluate the sum and the difference
Interval = (23, 27)
Hence, the interval about the mean of data within one standard deviation is (23, 27)
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