APBI 100 Lecture 8: stat200pracmidtermB_sol
Document Summary
The boxplot on the left shows data from left handers. The boxplot on the right shows data from right handers. There are outliers in the distributions of the left hand size data for both handedness groups. For the distribution among the right handers, the rst quartile is the same as the third quartile. More than 25% of the left handers have left hand sizes that are shorter than the minimum left hand size of the right handers. None of the above: at the present time the noise level per jet takeo in one neighbourhood near the airport is believed to follow the normal distribution with mean 102 decibels and standard deviation 5 decibels. Suppose a regulation is passed that requires jet noise in this neighbourhood to be lower than 105 decibels 97. 5% of the time. By 68-95-99. 7 rule, 105 is 2 sd"s above the mean. So = 105 2(5) = 95.
