Refer to the bolt strength problem 17.47. Assume µ= 6,050 and σ = 100. Use the following 24 individualbolt strength observations 10 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?
6,121 | 6,100 | 6,007 | 6,166 | 6,164 | 6,032 | 6,276 | 6,151 |
6,054 | 5,836 | 6,024 | 6,105 | 6,033 | 6,066 | 6,079 | 6,192 |
6,028 | 6,087 | 5,983 | 6,040 | 6,062 | 6,054 | 6,100 | 5,983 |
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