QUESTION 16 Scores on an endurance test for cardiac patients are normally distributed with a mean...

Question

Question

math Statistics-And-Probability

Answer 1

Answer #1

Here, μ = 182, σ = 24 and x = 170. We need to compute P(X >= 170). The corresponding z-value is calculated using Central Limit Theorem

z = (x - μ)/σ
z = (170 - 182)/24 = -0.5

Therefore,
P(X >= 170) = P(z <= (170 - 182)/24)
= P(z >= -0.5)
= 1 - 0.3085
= 0.6915

option D

Answer 2

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