Pizza delivery times are normally distributed with a mean time of 30 minutes and standard deviation...
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Pizza delivery times are normally distributed with a mean time of 30 minutes and standard deviation on 5 minutes. The distribution has been provided below for reference. Density 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01- 0.00 3 SD 15 Distribution of Pizza Delivery Times Normal, Mean=30, StDev=5 -1 SD -2 50 20 % 25 30 Minutes % 15D 35 Use the 68-95-99.7 rule to find the following quantities. Do not round any answers. a) What portion of delivery times are between 20 and 40 minutes? b) What portion of delivery times are more than 40 minutes? 2 SD 350 c) What portion of delivery times are between 20 and 30 minutes? Pizza delivery times are normally distributed with a mean time of 30 minutes and standard deviation on 5 minutes. The distribution has been provided below for reference. Density 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01- 0.00 3 SD 15 Distribution of Pizza Delivery Times Normal, Mean=30, StDev=5 -1 SD -2 50 20 % 25 30 Minutes % 15D 35 Use the 68-95-99.7 rule to find the following quantities. Do not round any answers. a) What portion of delivery times are between 20 and 40 minutes? b) What portion of delivery times are more than 40 minutes? 2 SD 350 c) What portion of delivery times are between 20 and 30 minutes?
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