A random sample of 82 college students were asked how many hours do they exercise in a typical week. The data was entered in the Statistix software and the descriptive statistics printouts is shown below:Descriptive StatisticsExerciseN 82Lo 93% CI 6.0925Mean 6.9878Up 93% CI 7.8831SD 4.4152Minimum 0.0000Median 6.5000Maximum 22.000Suppose it is desired to reduce the width of the confidence interval to get more accurate information. Which of the following will accomplish this goal?A. Decrease the reliability levelB. Decrease the sample sizeC. Decrease the alpha usedD. All of these would result in a narrower interval