Questions from Applied Statistics

Q: Refer to the paint thickness problem 17.49. Assume μ

Refer to the paint thickness problem 17.49. Assume μ = 1.00 and σ = 0.07. Use the following 35 individual observations on paint thickness to answer the questions posed. Pro...

Q: Refer back to the regression equation in exercise 12.14:

Refer back to the regression equation in exercise 12.14: Credits = 15.4 - .07 Work. (a) Calculate the residual for the x, y pair (14, 18). Did the regression equation underestimate or overestimate the...

Q: Refer to the freezer problem 17.51 with μ = 23

Refer to the freezer problem 17.51 with μ = 23 and σ = 2. Temperature measurements are recorded four times a day (at midnight, 0600, 1200, and 1800). Twenty samples of four ob...

Q: Use MINITAB’s Stat > Basic Statistics > Normality Test or other software

Use MINITAB’s Stat > Basic Statistics > Normality Test or other software to obtain a probability plot for the Ashoka Curry House carry-out order data (see Exercise 15.16). Inte...

Q: Set up control limits for an
chart, given
=

Set up control limits for an
chart, given
= 12.50,
= .42, and n = 5.

Q: Set up control limits for an
chart, given μ =

Set up control limits for an
chart, given μ = 400, σ = 2, and n = 4.

Q: Time (in seconds) to serve an early-morning customer

Time (in seconds) to serve an early-morning customer at a fast-food restaurant is normally distributed. Set up a control chart for the mean serving time, assuming that serving times were sampled in ra...

Q: A study of the role of spreadsheets in planning in 55 small

A study of the role of spreadsheets in planning in 55 small firms defined Y = “satisfaction with sales growth” and X = “executive commitment to planning.” Analysis yielded an overall correlation of r...

Q: Refer to the Wheat Chex box fill problem 17.56 with

Refer to the Wheat Chex box fill problem 17.56 with μ = 465 and σ = 3. Below are 30 individual observations on box fill. Problem 17.56: A box of Wheat Chex cereal is to be...

Q: Regression analysis of free throws by 29 NBA teams during the 2002

Regression analysis of free throws by 29 NBA teams during the 2002–2003 season revealed the fitted regression Y = 55.2 + .73X (R2 = .874, syx = 53.2), where Y = total free throws made and X = total fr...