Question

The following data represents the number of consecutive minutes (to the nearest minute) 2. spent on mobile phones by students attending the University of A. 23 2 26 40 22 52 28 40 19 55 50 52 51 46 51 60 59 45 26 2 48 1 34 10 18 45 29 41 11 43 50 32 37 15 57 17 57 35 50 45 7 22 15 13 20 13 15 32 13 39 25 38 31 16 7 33 29 15 17 45 1 32 41 33 26 16 3 27 57 56 34 32 27 60 17 54 46 4 44 18 20 10 24 58 33 30 23 53 20 55 56 14 35 55 4 6 53 3 34 57 39 57 10 29 55 22 17 60 21 4 42 22 54 53 31 1 | P age

Answer 1

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3)

The probability that missile is not missed is p = .9

a/

P(all 3 are misses) = (1-.9)^3 = 0.001

b/

P(2 missiles will hit the target) = 3C2 * .9^2 * .1^1 = 3*.81*.1 = .243

c/

P(at most 2 target is missed) = P(X<=2) = 1 - P(X>2) = 1- P(X=3) = 1- (3C3*.9^3*.1^0) = 1-.729 = .271

d/.

P(2 targets are missed) = P(1 target is hit) = = 3C1 * .9^1 * .1^2 = 3*.9*.01 = .027

e/

P(at least one missile hits its intented target) = 1- P(none hit the target) = 1 - 3C0*.9^0*.1^3 = 1- 1*.001 = 1-.001 = .999