The yards per carry of 20 randomly selected college football running backs are listed below. Assume the yards per carry are normally distributed. Use two decimal places in all numerical answers. 2.8, 3.9, 5.0, 4.4, 3.3, 3.8, 4.8, 4.9, 3.8, 4.2, 3.9, 3.6, 4.0, 3.7; 6.0, 7.2, 4.8, 2.9, 5.3, 4.5 (a) For a 95% confidence interval, the point estimate is (b) The critical value is (c) The margin of error is (d) The lower confidence limit is and the upper confidence limit is (e) Complete the interpretation of the confidence interval. List the interval limits in increasing order. the mean yards per carry for is between and