Two sharpshooters will simultaneously shoot once at a target. Let Xi , i = 1, 2, be marksman i's horizontal error, measured in meters. If the target's position is (a, b), and marksman i's shot ends up at (x, y), then Xi = (x - a). These errors are modeled by X1 ~ N(0, 0.5) and X2 ~ N(0, 1). What is the probability that both shots will be within 1 meter of the target, in the horizontal direction?

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter3: Functions And Graphs
Section3.3: Lines
Problem 21E
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Two sharpshooters will simultaneously shoot once at a target.

Let X, i = 1, 2, be marksman i's horizontal error, measured in meters. If the target's position is (a, b), and marksman i's shot ends up at (x, y), then Xi = (x - a).

These errors are modeled by X1 ~ N(0, 0.5) and X2 ~ N(0, 1).


What is the probability that both shots will be within 1 meter of the target, in the horizontal direction?

Expert Solution
Step 1

Given that, the errors are modelled by X1~N(0,0.5),X2~N(0,1).

To solve this problem z table values are used.

Calculate the probability that both shots will be within 1 meter of the target as shown below.

P(x11)×P(x21)=P(x1-μ1σ11-00.5)×P(x2-μ2σ21-01)P(x11)×P(x21)=P(z10.5)×P(z21)P(x11)×P(x21)=0.6915×0.8413P(x11)×P(x21)=0.5818

 

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