Questions from Applied Statistics

Q: Find the Cp and Cpk indexes for a process with μ =

Find the Cp and Cpk indexes for a process with μ = 0.426, σ = 0.001, LSL = 0.423, USL = 0.432. How would you rate the capability of this process? Explain.

Q: Find the Cp and Cpk indexes for a process with μ =

Find the Cp and Cpk indexes for a process with μ = 55.4, σ = 0.1, LSL = 55.2, USL = 55.9. How would you rate the capability of this process? Explain.

Q: Which is the correct z value for a two-tailed test

Which is the correct z value for a two-tailed test at α = .05? a. z = ±1.645 b. z = ±1.960 c. z = ±2.326

Q: To print 8.5 × 5.5 note pads,

To print 8.5 × 5.5 note pads, a copy shop uses standard 8.5 × 11 paper, glues the long edge, then cuts the pads in half so that the pad width is 5.5 inches. However, there is...

Q: An estimated regression for a random sample of observations on an assembly

An estimated regression for a random sample of observations on an assembly line is Defects = 3.2 + 0.045 Speed, where Defects is the number of defects per million parts and Speed is the number of unit...

Q: (a) Interpret the slope of the fitted regression Sales =

(a) Interpret the slope of the fitted regression Sales = 842 - 37.5 Price. (b) If Price = 20, what is the prediction for Sales? (c) Would the intercept be meaningful if this regression represents DVD...

Q: (a) Interpret the slope of the fitted regression CarTheft =

(a) Interpret the slope of the fitted regression CarTheft = 1,667 - 35.3 MedianAge, where CarTheft is the number of car thefts per 100,000 people by state, and MedianAge is the median age of the popul...

Q: Which statement is correct concerning one-factor ANOVA? Why not

Which statement is correct concerning one-factor ANOVA? Why not the others? a. The ANOVA is a test to see whether the variances of c groups are the same. b. In ANOVA, the k groups are compared two at...

Q: In a random experiment with 50 independent trials with constant probability of

In a random experiment with 50 independent trials with constant probability of success .30, find the mean and standard deviation of the number of successes.