Refer to the paint thickness problem 17.49. Assume µ= 1.00 and σ= 0.07. Use the following 35 individualobservations on paint thickness 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 paint thickness is a normally distributed random variable? (c) Are the mean and standard deviation about as expected?
1.026 | 0.949 | 1.069 | 1.105 | 0.995 | 0.995 | 1.080 |
0.932 | 1.014 | 0.899 | 1.031 | 1.042 | 1.022 | 1.082 |
1.111 | 0.995 | 1.005 | 1.004 | 0.964 | 1.065 | 0.909 |
0.912 | 0.978 | 1.037 | 0.992 | 1.010 | 0.974 | 0.977 |
0.905 | 1.008 | 0.971 | 0.951 | 1.200 | 1.065 | 0972 |
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