- 2.1.1E: The probability that a bearing fails during the first month of use ...
- 2.1.2E: A die (six faces) has the number 1 painted on three of its faces, t...
- 2.1.3E: A section of an exam contains four True-False questions. A complete...
- 2.1.4E: Three times each day, a quality engineer samples a component from a...
- 2.1.5E: Four candidates are to be interviewed for a job. Two of them, numbe...
- 2.1.6E: Refer to Exercise 5. Two candidates are randomly selected.a. List t...
- 2.1.7E: In a survey of households with television sets, the proportion of t...
- 2.1.8E: An automobile insurance company divides customers into three catego...
- 2.1.9E: Among the cast aluminum parts manufactured on a certain day, 80% we...
- 2.1.10E: The article “High Cumulative Risk of Lung Cancer Death among Smoker...
- 2.1.11E: A quality-control engineer samples 100 items manufactured by a cert...
- 2.1.12E: Let V be the event that a computer contains a virus, and let W be t...
- 2.1.13E: Let S be the event that a randomly selected college student has tak...
- 2.1.14E: Six hundred paving stones were examined for cracks, and 15 were fou...
- 2.1.15E: All the fourth -graders in a certain elementary school took a stand...
- 2.1.16E: A system contains two components, A and B. The system will function...
- 2.1.17E: A system contains two components, A and B. The system will function...
- 2.1.18E: Human blood may contain either or both of two antigens, A and B. Bl...
- 2.1.19E: True or false: If A and B are mutually exclusive,a. P (A?B) = 0____...
- 2.1.20E: A flywheel is attached to a crankshaft by 12 bolts, numbered 1 thro...
Solutions for Chapter 2.1: Statistics for Engineers and Scientists 4th Edition
Full solutions for Statistics for Engineers and Scientists | 4th Edition
2 k factorial experiment.
A full factorial experiment with k factors and all factors tested at only two levels (settings) each.
`-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).
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
A study in which a sample from a population is used to make inference to a future population. Stability needs to be assumed. See Enumerative study
An estimator for a parameter obtained from a Bayesian method that uses a prior distribution for the parameter along with the conditional distribution of the data given the parameter to obtain the posterior distribution of the parameter. The estimator is obtained from the posterior distribution.
An attribute control chart that plots the total number of defects per unit in a subgroup. Similar to a defects-per-unit or U chart.
A horizontal line on a control chart at the value that estimates the mean of the statistic plotted on the chart. See Control chart.
Another term for the conidence coeficient.
In the most general usage, a measure of the interdependence among data. The concept may include more than two variables. The term is most commonly used in a narrow sense to express the relationship between quantitative variables or ranks.
A measure of association between two random variables obtained as the expected value of the product of the two random variables around their means; that is, Cov(X Y, ) [( )( )] =? ? E X Y ? ? X Y .
An expression sometimes used for nonlinear regression models or polynomial regression models.
Error mean square
The error sum of squares divided by its number of degrees of freedom.
A property of a collection of events that indicates that their union equals the sample space.
A method of variable selection in regression, where variables are inserted one at a time into the model until no other variables that contribute signiicantly to the model can be found.
In statistical quality control, that portion of a number of units or the output of a process that is defective.
An arrangement of the frequencies of observations in a sample or population according to the values that the observations take on
Gamma random variable
A random variable that generalizes an Erlang random variable to noninteger values of the parameter r
Effects in a fractional factorial experiment that are used to construct the experimental tests used in the experiment. The generators also deine the aliases.
Goodness of fit
In general, the agreement of a set of observed values and a set of theoretical values that depend on some hypothesis. The term is often used in itting a theoretical distribution to a set of observations.
The harmonic mean of a set of data values is the reciprocal of the arithmetic mean of the reciprocals of the data values; that is, h n x i n i = ? ? ? ? ? = ? ? 1 1 1 1 g .