Answer:
The value that is 1 standard deviation above the mean is 39 minutes
Step-by-step explanation:
The average playing time of music albums in a large collection is 32 minutes, and the standard deviation is 7 minutes.
(a) What value is 1 standard deviation above the mean
The formula to apply for this question is
the empirical rule
68% of data falls within 1 standard deviation from the mean - that means between μ - σ and μ + σ.
μ - σ
32 minutes - 7minutes
= 15 minutes
μ + σ
32 minutes + 7 minutes
= 39 minutes
