To determine if chocolate milk was effective as other carbohydrate replacement d

Question

To determine if chocolate milk was effective as other carbohydrate replacement drinks, nine male cyclist performed an intense workout followed by a drink and a rest period. At the end of the rest period, each cyclist performed an endurance trial where he exercised until exhausted and time to exhaustion was measured. Each cyclist completed the entire regimen on two different days. On one day the drink provided was chocolate like and on the other day the drink provided was a carbohydrate replacement drink.
To determine if chocolate milk was a effective as other carbohydrate replacement drinks, nine performed an intense workout followed by a drink and a rest period. At the end of the rest period, each performed an endurance trial where he exercised until exhausted and time to exhaustion was measured. Each cyclist completed the regimen on two entire different days. On one day the drink provided was chocolate milk and on the other day the drink provided was a carbohydrate replacement drink. Data consistent with summary quantities appear in the table below. (use a statistical computer package to calculate the P value. Subtract the carbohydrate replacement times from the chocolate milk times. Round your test statistic to two decimal places, your dif down to the nearest whole number and the P-value to three decimal places.) Time to Exhaustion (minutes) Cyclist Chocolate 48.92 53.23 52.04 59.37 34.99 22.38 36.79 41.75 23.27 Milk Carbohydrate 51.64 31.71 34.66 39.98 36.74 10.27 11.03 12.85 46.22 Replacement

Explanation / Answer

Differences=-2.72,21.52,17.39,19.39,-1.75,12.11,25.76,28.9,-22.95

Hence Mean=10.85

SD=16.8248

t=10.858*sqrt(9)/16.8248=1.93

dof=n-1=9-1=8

p value=2*P(t>1.9346,8dof)=0.089

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