John has a 25% chance of missing his target with his arrow.
1. How many times would you expect john to hit the target in 120 shots
2006-09-28 05:22:01 · 17 answers · asked by xx gemma xx 1 in Science & Mathematics ➔ Mathematics
90
2006-09-28 05:23:34 · answer #1 · answered by Anonymous · 0⤊ 1⤋
90. A 25% chance of missing gives a 75% chance of hitting which is three quarters. 3/4's of 120 is 90. Simple.
2006-09-28 12:30:49 · answer #2 · answered by zipman 2 · 0⤊ 0⤋
90
2006-09-28 12:30:43 · answer #3 · answered by kerrykinsmalosevich 3 · 0⤊ 0⤋
90
2006-09-28 12:30:20 · answer #4 · answered by Anonymous · 0⤊ 0⤋
90
2006-09-28 12:30:12 · answer #5 · answered by kat13 3 · 0⤊ 0⤋
90
2006-09-28 12:29:30 · answer #6 · answered by ? 5 · 0⤊ 0⤋
90
2006-09-28 12:29:10 · answer #7 · answered by geo1985 2 · 0⤊ 0⤋
90
2006-09-28 12:28:02 · answer #8 · answered by Anonymous · 0⤊ 0⤋
120 (total shots ) X 0.75 (=1- 0.25 chances of missing the target) = 90 times
2006-09-28 12:39:15 · answer #9 · answered by the big black bat 3 · 0⤊ 0⤋
I'm no Einstein but would guess that if he hits the target 75% of the time, you would therefore expect him to hit it 90 times (75% of 120).
2006-09-28 12:25:29 · answer #10 · answered by Chris G 3 · 0⤊ 0⤋