Here Are Some Summary Statistics for All of the Runners $\text { time } = 129$

Multiple Choice

Here are some summary statistics for all of the runners in a local 12 kilometre race: slowest $\text { time } = 129$ minutes, $\text { mean } = 79$ minutes, $\text { median } = 79$ minutes, $\text { range } = 99$ minutes, $\mathrm { IQR } = 64 \text {, }$ $\mathrm { Q } 1 = 32$ standard $$\text { deviation } = 11$$ minutes.Suppose last year's race results were better by 8%.Find last year's mean and standard deviation.Express your answer in exact decimals.

A) Mean: 6.32 minutes,SD: 0.88 minutes
B) Mean: 85.32 minutes,SD: 11 minutes
C) Mean: 85.32 minutes,SD: 11.88 minutes
D) Mean: 72.68 minutes,SD: 10.12 minutes
E) Mean: 72.68 minutes,SD: 11 minutes