Question

There were 53 competitors in a downhill skiing event. Their times (in seconds) are shown below. Complete parts a through d below. 98.23 98.36 98.43 98.57 98.61 98.63 98.64 98.79 98.86 98.87 99.13 99.95 100.22 100.37 100.43 100.51 100.78 100.89 100.94 101.22 101.27 101.57 101.87 102.11 102.19 102.23 102.87 103.22 103.33 103.44 103.73 103.79 103.81 103.88 104.05 104.05 104.21 104.41 104.56 104.62 104.82 104.91 105.22 105.32 105.44 105.85 105.92 105.96 109.67 113.61 114.44 115.44 117.02 a) The mean time was 103.19 seconds, with a standard deviation of 4.32 seconds. If the Normal model is appropriate, what percent of times will be less than 107.51 seconds? 84 % (Round to the nearest integer as needed.) b) What is the actual percent of times less than 107.51 seconds? (Round to one decimal place as needed.)

          There were 53 competitors in a downhill skiing event. Their times (in seconds) are shown below. Complete parts a through d below.
98.23 98.36 98.43 98.57 98.61 98.63 98.64 98.79 98.86 98.87
99.13 99.95 100.22 100.37 100.43 100.51 100.78 100.89 100.94 101.22
101.27 101.57 101.87 102.11 102.19 102.23 102.87 103.22 103.33 103.44
103.73 103.79 103.81 103.88 104.05 104.05 104.21 104.41 104.56 104.62
104.82 104.91 105.22 105.32 105.44 105.85 105.92 105.96 109.67 113.61
114.44 115.44 117.02
a) The mean time was 103.19 seconds, with a standard deviation of 4.32 seconds. If the Normal model is appropriate, what percent of times will be less than 107.51 seconds?
84 %
(Round to the nearest integer as needed.)
b) What is the actual percent of times less than 107.51 seconds?
(Round to one decimal place as needed.)

There were 53 competitors in a downhill skiing event. Their times (in seconds) are shown below. Complete parts a through d below.
98.23 98.36 98.43 98.57 98.61 98.63 98.64 98.79 98.86 98.87
99.13 99.95 100.22 100.37 100.43 100.51 100.78 100.89 100.94 101.22
101.27 101.57 101.87 102.11 102.19 102.23 102.87 103.22 103.33 103.44
103.73 103.79 103.81 103.88 104.05 104.05 104.21 104.41 104.56 104.62
104.82 104.91 105.22 105.32 105.44 105.85 105.92 105.96 109.67 113.61
114.44 115.44 117.02
a) The mean time was 103.19 seconds, with a standard deviation of 4.32 seconds. If the Normal model is appropriate, what percent of times will be less than 107.51 seconds?
84 %
(Round to the nearest integer as needed.)
b) What is the actual percent of times less than 107.51 seconds?
(Round to one decimal place as needed.)

Added by Kenneth F.

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