Construct a normal probability plot for the following sample of observations on
ID: 3335714 • Letter: C
Question
Construct a normal probability plot for the following sample of observations on coating thickness for low-viscosity paint 0.85 0.88 0.88 1.06 1.07 1.10 1.29 1.30 1.46 1.50 1.59 1.60 1.66 1.72 1.75 1.83 Determine the z percentile associated with each sample observation. (Round your answers to two decimal places.) Sample observation 0.85 0.88 0.88 1.06 1.07 1.10 1.29 1.30 z percentile Sample observation 1.46 1.50 1.59 1.60 1.66 1.72 1.75 1.83 the plot that best represents the nármal probabilty plot for the sample of Choose hickness thickness 1.8 1.6 1.4 1.2 1.6 1.2 1.0 08. 0.8 -2 thickness thickness 1.8 1.6 1.2 1.2 1.0 0.8 e. 0.8 -2 -1 Would you feel comfortable g population mean thickness using a method that assumed a normal population distribution? O Yes, the probabillity plot is reasonably straight O Yes, the probability plot is not straight. O No, the probability plot is reasonably straight. O No, the probability plot is not straight.Explanation / Answer
Answer:
n
16
mean
1.3463
sample standard deviation
0.3367
Z percentile
0.85
-1.47
0.88
-1.38
0.88
-1.38
1.06
-0.85
1.07
-0.82
1.1
-0.73
1.29
-0.17
1.3
-0.14
1.46
0.34
1.5
0.46
1.59
0.72
1.6
0.75
1.66
0.93
1.72
1.11
1.75
1.20
1.83
1.44
Plot: top left plot
No, the probability plot is not straight.
n
16
mean
1.3463
sample standard deviation
0.3367