Question

6) Do the stuff in the question, please. a) Suppose that the average number of bench presses of 225 pounds (reps) by nose tackles during the 29.5 and ơ # 3.1. A nose tackle wants to be at the 80m ne is normally distributed with percentile for bench presses of 225 pounds. How many reps does he need to do? Suppose that the average number of bench presses of 225 pounds (reps) by nose tackles during the NFL combine is normally distributed with 29.5 and ơ-3.1. A nose tackle wants to be at the 99th percentile for bench presses of 225 pounds. How many reps does he need to do? b) Only 18 players have ever had more than 40 reps at the NFL combine. Suppose a nose tackle had 40 reps; what percentile would he be at? c)

Answer 1

a) for 80th percentile ; critical z =0.84

therefore corresponding value=mean+z*std deviation=

32.10

b)

for 99th percentile critical value of z=		2.33
therefore corresponding value=mean+z*std deviation=			36.72

c)

for 40 reps; z score=(X-mean)/std deviaiton =(40-29.5)/3.1=3.39

corresponding percentile =0.03 percentile