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The amount of time all students in a very large undergraduate statistics course take to complete...

The amount of time all students in a very large undergraduate statistics course take to complete an examination is distributed continuously and normally. The probability a student selected at random takes at least 55.50 minutes to complete the examination equals 0.6915. The probability a student selected at random takes no more than 71.52 minutes to complete the examination equals 0.8997. a. Determine the value for the mean (μ) of the associated distribution. b. Determine the value for the standard deviation (σ) of the associated distribution.

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