Use Technology to Solve the Following Problem: the Lifetime of a Certain

question 101

Multiple Choice

Use technology to solve the following problem: The lifetime of a certain type of automobile tire (in thousands of miles) is normally distributed with mean $\mu = 44$ and standard deviation $\sigma = 4$ . What Proportion of tires have lifetimes of less than 49 thousand miles?

• A) 0.1056
• B) 0.4472
• C) 0.8944
• D) 0.5528

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