Let X=X=X= pulse rate: X∼N(μ,σ2)X\sim N(\mu, \sigma^2)X∼N(μ,σ2)
Then Z=X−μσ∼N(0,1)Z=\dfrac{X-\mu}{\sigma}\sim N(0, 1)Z=σX−μ∼N(0,1)
Given μ=76.0,σ=12.5\mu=76.0, \sigma=12.5μ=76.0,σ=12.5
The probability is 0.251032.0.251032.0.251032.
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