- SE1.SE.1: [10 10]* Six students took the same test and got 65, 91, 84, 79, 58...
- SE1.SE.6:  A set of one- or two-digit numbers are listed in thefollowin...
- SE1.SE.11: [15 10] A laboratory performed fifteen tests comparing the flying d...
- SE1.SE.15: [15 5 5] In a community, 60% of the families have at least 1 child,...
- SE1.SE.2: [15 5] Consider the following record of the daily temperatures (F) ...
- SE1.SE.7: [10 10] A laboratory performed twenty tests on the flying distances...
- SE1.SE.12:  A phone service center keeps track of the number of incoming c...
- SE1.SE.16: [10 5 10] In a state, 12% of the electorate voted for A1 for the go...
- SE1.SE.3:  Construct a histogram for the following data using four classe...
- SE1.SE.8:  A biologist measures the body weights (in kg) of different ani...
- SE1.SE.13: [15 10] Largemouth bass were studied in 53 different Florida lakes ...
- SE1.SE.17: [10 5] Suppose that 6.5% of men and 2.1% of women are color-blind. ...
- SE1.SE.4: [5 10] Jim surveyed his classmates reading preferences. Eight stude...
- SE1.SE.9: [10 10] The math department provides a free walk-in tutoring servic...
- SE1.SE.14: [15 15] The sizes of fifteen cathedrals in different cities are mea...
- SE1.SE.18: [10 10] A system consisting of four components, C1 through C4, oper...
- SE1.SE.5: [15 10] The printing server keeps track of the amount of printing r...
- SE1.SE.10: [15 5] The size of twelve cathedrals in different cities are measur...
- SE1.SE.19: [10 5] An instructor gave her students 12 problems, telling them th...
Solutions for Chapter SE1: Sample Exams
Full solutions for Probability and Statistics for Engineering and the Sciences (with Student Suite Online) | 7th Edition
`-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 hypothesis testing, a region in the sample space of the test statistic such that if the test statistic falls within it, the null hypothesis cannot be rejected. This terminology is used because rejection of H0 is always a strong conclusion and acceptance of H0 is generally a weak conclusion
In a fractional factorial experiment when certain factor effects cannot be estimated uniquely, they are said to be aliased.
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
Binomial random variable
A discrete random variable that equals the number of successes in a ixed number of Bernoulli trials.
Box plot (or box and whisker plot)
A graphical display of data in which the box contains the middle 50% of the data (the interquartile range) with the median dividing it, and the whiskers extend to the smallest and largest values (or some deined lower and upper limits).
Any test of signiicance based on the chi-square distribution. The most common chi-square tests are (1) testing hypotheses about the variance or standard deviation of a normal distribution and (2) testing goodness of it of a theoretical distribution to sample data
Coeficient of determination
See R 2 .
The mean of the conditional probability distribution of a random variable.
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 square matrix that contains the correlations among a set of random variables, say, XX X 1 2 k , ,…, . The main diagonal elements of the matrix are unity and the off-diagonal elements rij are the correlations between Xi and Xj .
Another name for factors that are arranged in a factorial experiment.
An expression sometimes used for nonlinear regression models or polynomial regression models.
Another name for a cumulative distribution function.
Extra sum of squares method
A method used in regression analysis to conduct a hypothesis test for the additional contribution of one or more variables to a model.
A signal from a control chart when no assignable causes are present
In statistical quality control, that portion of a number of units or the output of a process that is defective.
Geometric random variable
A discrete random variable that is the number of Bernoulli trials until a success occurs.
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.
In multiple regression, the matrix H XXX X = ( ) ? ? -1 . This a projection matrix that maps the vector of observed response values into a vector of itted values by yˆ = = X X X X y Hy ( ) ? ? ?1 .