Construct a normal probability plot for the following sample erf observations on
ID: 3132728 • Letter: C
Question
Construct a normal probability plot for the following sample erf observations on coating thickness for low-viscosity paint. 0.83 0.86 089 1.04 1.10 1.13 1.28 1.32 1.47 1.49 1.59 1.62 1.64 1.69 1.78 1.85 Determine the Z percentie associated with each sample observation.(Round your answers to two decimal places.) Choose the plot that best represents the normal probability plot for the sample of observations.Would you feel comfortable estimating population mean thickness using a method that assumed a normal population distribution?Explanation / Answer
Descriptive Statistics: Samples
Total
Variable Count Mean StDev Variance Sum
Samples 16 1.3488 0.3400 0.1156 21.5800
The Z- percentile is calculated by using
Z = (X - Mean)/SD = (X - 1.3488)/0.34
By using above formula for each sample, the value are
Correct Answer:Option (A)
Correct Answer: Option (A)
Samples Z - Percentiles 0.83 -1.53 0.86 -1.44 0.89 -1.35 1.04 -0.91 1.1 -0.73 1.13 -0.64 1.28 -0.2 1.32 -0.08 1.47 0.36 1.49 0.42 1.59 0.71 1.62 0.8 1.64 0.86 1.69 1 1.78 1.27 1.85 1.47