the number of yards a NFL running back runs in a game has a mean of 80 yards with a standard deviation of 20 yards. a random sample of 5 running backs is selected and we are interested in xbar; the average yards run by the sample.
1. what is the probability that the average number of yards is above 100 yards? draw the graph related to the situation and shade in the appropriate area.
2. find the 85th percentile for the average number of yards.
4. the middle 95% of the average number of yards would fall between what values? "blank and "blank"
2007-11-14 16:57:59 · 2 answers · asked by liuj71 2 in Science & Mathematics ➔ Mathematics
1. P(xbar > 100) = 0.012671
2. 89.2699 yd
4. 62.5 and 97.5
2007-11-17 20:59:04 · answer #1 · answered by Helmut 7 · 0⤊ 0⤋
the only situation homework does is waste all some time, you circulate to college all day that's like 7 hours and then 2 hours of your night is spent doing belongings you may do at school. you dont even get to delight on your teenage years.
2016-12-08 22:23:29 · answer #2 · answered by ? 4 · 0⤊ 0⤋