- 13.5.17: Production Yield Suppose you wish to predictproduction yield y as a...
- 13.5.18: Suppose E(y) is related to two predictor variablesx1 and x2 by the ...
- 13.5.19: A multiple linear regression model involvingone qualitative and one...
- 13.5.20: Less Red Meat! One desirable dietarychange if you want to eat right...
- 13.5.21: Cotton versus Cucumber In Exercise11.65, you used the analysis of v...
- 13.5.22: Achievement Scores III The AcademicPerformance Index (API), describ...
- 13.5.23: Particle Board A quality control engineer isinterested in predictin...
- 13.5.24: Construction Projects In a study toexamine the relationship between...
- 13.5.25: Biotin Intake in Chicks Groups of 10-day-old chicks were randomly a...
- 13.5.26: Advertising and Sales A departmentstore conducted an experiment to ...
- 13.5.27: Advertising and Sales, continued Refer toExercise 13.26. Use a comp...
- 13.5.28: Demand for Utilities A short-termstudy was conducted to investigate...
- 13.5.29: Mercury Concentration in DolphinsBecause dolphins (and other large ...
- 13.5.30: GRE Scores The quantitative reasoningscores on the Graduate Record ...
- 13.5.31: On the Road Again Until recently,performance tires were fitted most...
- 13.5.32: una Fish The tuna fish data fromExercise 11.16 were analyzed as a c...
- 13.5.33: Tuna, continued Refer to Exercise 13.32.The hypothesis tested in Ch...
- 13.5.34: Quality Control A manufacturerrecorded the number of defective item...
- 13.5.35: Metal Corrosion and Soil Acids Inan investigation to determine the ...
- 13.5.36: Managing your Money A particularsavings and loan corporation is int...
Solutions for Chapter 13.5: Using Quantitative and Qualitative Predictor Variables in a Regression Model
Full solutions for Introduction to Probability and Statistics 1 | 14th Edition
Solutions for Chapter 13.5: Using Quantitative and Qualitative Predictor Variables in a Regression ModelGet Full Solutions
`-error (or `-risk)
In hypothesis testing, an error incurred by rejecting a null hypothesis when it is actually true (also called a type I error).
A formula used to determine the probability of the union of two (or more) events from the probabilities of the events and their intersection(s).
In statistical hypothesis testing, this is a hypothesis other than the one that is being tested. The alternative hypothesis contains feasible conditions, whereas the null hypothesis speciies conditions that are under test
The arithmetic mean of a set of numbers x1 , x2 ,…, xn is their sum divided by the number of observations, or ( / )1 1 n xi t n ? = . The arithmetic mean is usually denoted by x , and is often called the average
Average run length, or ARL
The average number of samples taken in a process monitoring or inspection scheme until the scheme signals that the process is operating at a level different from the level in which it began.
Bivariate normal distribution
The joint distribution of two normal random variables
The portion of the variability in a set of observations that is due to only random forces and which cannot be traced to speciic sources, such as operators, materials, or equipment. Also called a common cause.
Coeficient of determination
See R 2 .
A subset selected without replacement from a set used to determine the number of outcomes in events and sample spaces.
Conditional probability density function
The probability density function of the conditional probability distribution of a continuous random variable.
An estimator that converges in probability to the true value of the estimated parameter as the sample size increases.
A dimensionless measure of the linear association between two variables, usually lying in the interval from ?1 to +1, with zero indicating the absence of correlation (but not necessarily the independence of the two variables).
Formulas used to determine the number of elements in sample spaces and events.
Cumulative normal distribution function
The cumulative distribution of the standard normal distribution, often denoted as ?( ) x and tabulated in Appendix Table II.
Defects-per-unit control chart
See U chart
A subset of effects in a fractional factorial design that deine the aliases in the design.
Discrete uniform random variable
A discrete random variable with a inite range and constant probability mass function.
Erlang random variable
A continuous random variable that is the sum of a ixed number of independent, exponential random variables.
Error sum of squares
In analysis of variance, this is the portion of total variability that is due to the random component in the data. It is usually based on replication of observations at certain treatment combinations in the experiment. It is sometimes called the residual sum of squares, although this is really a better term to use only when the sum of squares is based on the remnants of a model-itting process and not on replication.
A signal from a control chart when no assignable causes are present