Determine the probability that it will take a person between 5 to 8 minutes to assemble the phone.
What will be an ideal response?
The value 5 is below the mean value and the z value corresponding to 5 is determined from
A = 0.3790. Similarly, the value 8 is above the mean value and the z score corresponding to 8 is computed from
A = 0.2019. Therefore, the probability that it will take a person between 5 and 8 minutes to assemble the phone is 0.3790 + 0.2019 = 0.5809 or 0.58.
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