Questions from Engineering Statistics

Q: Test for linearity of regression in Exercise 11.3 on page

Test for linearity of regression in Exercise 11.3 on page 398. Use a 0.05 level of significance. Comment. Exercise 11.3: The amounts of a chemical compound y that dissolved in 100 grams of water at v...

Q: Test for linearity of regression in Exercise 11.8 on page

Test for linearity of regression in Exercise 11.8 on page 399. Comment. Exercise 11.8: A mathematics placement test is given to all entering freshmen at a small college. A student who receives a grad...

Q: Suppose we have a linear equation through the origin (Exercise 11

Suppose we have a linear equation through the origin (Exercise 11.28) μY |x = βx. (a) Estimate the regression line passing through the origin for the following data: (b) Su...

Q: Use an analysis-of-variance approach to test the hypothesis

Use an analysis-of-variance approach to test the hypothesis that β1 = 0 against the alternative hypothesis β1 = 0 in Exercise 11.5 on page 398 at the 0.05 level of significance...

Q: The following data are a result of an investigation as to the

The following data are a result of an investigation as to the effect of reaction temperature x on percent conversion of a chemical process y. (See Myers, Montgomery and Anderson-Cook, 2009.) Fit a sim...

Q: Transistor gain between emitter and collector in an integrated circuit device (

Transistor gain between emitter and collector in an integrated circuit device (hFE) is related to two variables (Myers, Montgomery and Anderson-Cook, 2009) that can be controlled at the deposition pro...

Q: Organophosphate (OP) compounds are used as pesticides. However,

Organophosphate (OP) compounds are used as pesticides. However, it is important to study their effect on species that are exposed to them. In the laboratory study Some Effects of Organophosphate Pesti...

Q: Heat treating is often used to carburize metal parts such as gears

Heat treating is often used to carburize metal parts such as gears. The thickness of the carburized layer is considered an important feature of the gear, and it contributes to the overall reliability...

Q: A regression model is desired relating temperature and the proportion of impurities

A regression model is desired relating temperature and the proportion of impurities passing through solid helium. Temperature is listed in degrees centigrade. The data are as follows: (a) Fit a line...

Q: The following data were collected to determine the relationship between pressure and

The following data were collected to determine the relationship between pressure and the corresponding scale reading for the purpose of calibration. (a) Find the equation of the regression line. (b)...