- 8.4.1: Explain what is meant by margin of error inpoint estimation.
- 8.4.2: What are two characteristics of the best point estimatorfor a popul...
- 8.4.3: 3 Calculate the margin of error in estimating a populationmean m fo...
- 8.4.4: Refer to Exercise 8.3. What effect does a largerpopulation variance...
- 8.4.5: Calculate the margin of error in estimating a populationmean m for ...
- 8.4.6: Refer to Exercise 8.5. What effect does anincreased sample size hav...
- 8.4.7: Calculate the margin of error in estimating abinomial proportion fo...
- 8.4.8: Refer to Exercise 8.7. What effect does increasingthe sample size h...
- 8.4.9: Calculate the margin of error in estimating abinomial proportion p ...
- 8.4.10: Suppose you are writing a questionnaire for asample survey involvin...
- 8.4.11: A random sample of n 900 observations froma binomial population pro...
- 8.4.12: 2 A random sample of n 50 observations froma quantitative populatio...
- 8.4.13: A random sample of n 500 observations froma binomial population pro...
- 8.4.14: A random sample of n 75 observations from aquantitative population ...
- 8.4.15: The San Andreas Fault One of the mostfamous large fractures (cracks...
- 8.4.16: Biomass Estimates of the earths biomass, thetotal amount of vegetat...
- 8.4.17: Consumer Confidence An increase in the rate ofconsumer savings is f...
- 8.4.18: Multimedia Kids Do our children spend asmuch time enjoying the outd...
- 8.4.19: Illegal Immigration In a recent poll thatincluded questions about i...
- 8.4.20: Hotel Costs Even within a particular chainof hotels, lodging during...
- 8.4.21: 900 Numbers Radio and television stationsoften air controversial is...
- 8.4.22: Men On Mars? Do you think that the UnitedStates should pursue a pro...
- 8.4.23: Hungry Rats In an experiment to assess thestrength of the hunger dr...
Solutions for Chapter 8.4: Point Estimation
Full solutions for Introduction to Probability and Statistics 1 | 14th Edition
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 chart used to organize the various potential causes of a problem. Also called a ishbone diagram.
A horizontal line on a control chart at the value that estimates the mean of the statistic plotted on the chart. See Control chart.
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
Conditional probability density function
The probability density function of the conditional probability distribution of a continuous random variable.
Conditional probability mass function
The probability mass function of the conditional probability distribution of a discrete random variable.
See Control chart.
A square matrix that contains the variances and covariances among a set of random variables, say, X1 , X X 2 k , , … . The main diagonal elements of the matrix are the variances of the random variables and the off-diagonal elements are the covariances between Xi and Xj . Also called the variance-covariance matrix. When the random variables are standardized to have unit variances, the covariance matrix becomes the correlation matrix.
Another name for factors that are arranged in a factorial experiment.
A parameter in a tabular CUSUM algorithm that is determined from a trade-off between false alarms and the detection of assignable causes.
The response variable in regression or a designed experiment.
Error of estimation
The difference between an estimated value and the true value.
Estimator (or point estimator)
A procedure for producing an estimate of a parameter of interest. An estimator is usually a function of only sample data values, and when these data values are available, it results in an estimate of the parameter of interest.
A property of a collection of events that indicates that their union equals the sample space.
Exponential random variable
A series of tests in which changes are made to the system under study
The distribution of the random variable deined as the ratio of two independent chi-square random variables, each divided by its number of degrees of freedom.
Finite population correction factor
A term in the formula for the variance of a hypergeometric random variable.
A function that is used to determine properties of the probability distribution of a random variable. See Moment-generating function
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 .