What is the probability that the 36 tires will have an
average of less than 16,000 miles until the tires begin
to wear out
We have that: X∼N(μ,σ2/n)X\sim N(\mu, \sigma^2/n)X∼N(μ,σ2/n)
μ=16800\mu=16800μ=16800
σ=3300\sigma=3300σ=3300
n=36n=36n=36
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