Question: 1. Elevated energy consumption during exercise continues after the workout ends. Because calories burned after exercise contribute to weight loss and have other consequences, it

1. Elevated energy consumption during exercise continues after the workout ends. Because calories burned after exercise contribute to weight loss and have other consequences, it is important to understand this process. The following data is from a study in which oxygen consumption (in liters) was measured continuously for 30 minutes for each of 15 subjects both after a weight training exercise (x).

# 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
x 14.6 14.4 19.5 24.3 16.3 22.1 23.0 18.7 19.0 17.0 19.1 19.6 23.2 18.5 15.9

a) FInd the five-summary and use it to calculate the interquartile range.

b) Contruct a boxplot using the five-number summary. Does the data have any outliers?

2. Cerebral blood flow (CBF) in the brains of healthy people is normally distributed with a mean of 74 and a standard deviation of 16 (measured in the appropriate units).

a) What percent of healthy people will have CBF readings above 100?

b) What percent of healthy people will have CBF readings below 40?

c) What percent of healthy people will have CBF readings between 60 and 80?

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