Question 9 pay attention to decimal point if it ask.

9. [-/8.92 Points] DETAILS DEVORESTAT9 1.4.055. MY NOTES ASK YOUR TEACHER A sample of 26 offshore oil workers took part in a simulated escape exercise, resulting in the accompanying data on time (sec) to complete the escape. Here is a stem-and-leaf display of escape time data. stem leaf 32 55 33 49 34 35 6699 36 34469 37 03345 38 39 2347 40 41 42 6 (a) Determine the value of the fourth spread. (b) Are there any outliers in the sample? Any extreme outliers? O There are several extreme outliers. There is one extreme outlier and one outlier. There are no outliers or extreme outliers. There is one extreme outlier and several outliers. O There are no extreme outliers but several outliers. (c) Construct a boxplot. ** FEDf I. * 1' Escape Escape Escape time time time 20 340 360 380 400 420 3 320 340 360 380 400 420 320 340 360 380 400 420 0 (sec) 0 (sec) 0 (sec) Escape time 320 340 360 380 400 420 O (sec) Comment on its features. 0 The distribution is positively skewed with several outliers. O The distribution is roughly bimodal with no outliers. O The distribution is roughly symmetric with no outliers. O The distribution is negatively skewed with several outliers. O The distribution is roughly symmetric with several outliers. (d) By how much could the largest observation, currently 426, be decreased without affecting the value of the fourth spread? sec