What is the answer

A particular study wanted to see whether people who are mildly obese are less active than leaner people. The study looked at the average number of minutes per day that people spend standing orwalking. Among mildly obese people, minutes of activity is Normally distributed with mean 373 minutes and standard deviation of 67 minutes. What proportion of mildly obese individuals spend between 350 and 380 minutes per day standing or walking? The first step is to find the z- scores of 350 and 380. These scores are -0.24 and 0.10, respectfully. Using those z-scores, the area under the curve to the left of each score is found and the final step is to the two areas. |