# Question

17.48 Refer to the bolt strength problem 17.47. Assume μ = σ 6,050 and 5 100. Use the following 24 individual bolt strength observations to answer the questions posed.
(a) Prepare a histogram and/or normal probability plot for the sample.
(b) Does the sample support the view that yield strength is a normally distributed random variable?
(c) Are the sample mean and standard deviation about where they are expected to be?

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