 72.1: Poll Results in the Media USA Today provided a snapshot illustratin...
 72.2: Margin of Error For the poll described in Exercise 1, describe what...
 72.3: Notation For the poll described in Exercise 1, what do p ^ , q ^ , ...
 72.4: Confidence Levels Given specific sample data, such as the data give...
 72.5: Finding Critical Values. In Exercises 58, find the indicated critic...
 72.6: Finding Critical Values. In Exercises 58, find the indicated critic...
 72.7: Finding Critical Values. In Exercises 58, find the indicated critic...
 72.8: Finding Critical Values. In Exercises 58, find the indicated critic...
 72.9: Formats of Confidence Intervals. In Exercises 912, express the conf...
 72.10: Formats of Confidence Intervals. In Exercises 912, express the conf...
 72.11: Formats of Confidence Intervals. In Exercises 912, express the conf...
 72.12: Formats of Confidence Intervals. In Exercises 912, express the conf...
 72.13: Constructing and Interpreting Confidence Intervals. In Exercises 13...
 72.14: Constructing and Interpreting Confidence Intervals. In Exercises 13...
 72.15: Constructing and Interpreting Confidence Intervals. In Exercises 13...
 72.16: Constructing and Interpreting Confidence Intervals. In Exercises 13...
 72.17: Gender Selection The Genetics and IVF Institute conducted a clinica...
 72.18: Gender Selection The Genetics and IVF Institute conducted a clinica...
 72.19: Touch Therapy When she was 9 years of age, Emily Rosa did a science...
 72.20: Mendelian Genetics When Mendel conducted his famous genetics experi...
 72.21: Online Books A Consumer Reports Research Center survey of 427 women...
 72.22: Want Boss's Job? In a USA Today survey, 20.8% of 144 respondents sa...
 72.23: Job Interviews In a Harris poll of 514 human resource professionals...
 72.24: Job Interviews In a Harris poll of 514 human resource professionals...
 72.25: M&Ms The Mars candy company claims that 13% of its M&M candies are ...
 72.26: Misleading Survey Responses In a survey of 1002 people, 70% said th...
 72.27: Cell Phones and Cancer A study of 420,095 Danish cell phone users f...
 72.28: Medication Usage In a survey of 3005 adults aged 57 through 85 year...
 72.29: Determining Sample Size. In Exercises 2936, use the given data to f...
 72.30: Determining Sample Size. In Exercises 2936, use the given data to f...
 72.31: Determining Sample Size. In Exercises 2936, use the given data to f...
 72.32: Determining Sample Size. In Exercises 2936, use the given data to f...
 72.33: Determining Sample Size. In Exercises 2936, use the given data to f...
 72.34: Determining Sample Size. In Exercises 2936, use the given data to f...
 72.35: Determining Sample Size. In Exercises 2936, use the given data to f...
 72.36: Determining Sample Size. In Exercises 2936, use the given data to f...
 72.37: Using Appendix B Data Sets. In Exercises 37 and 38, use the indicat...
 72.38: Using Appendix B Data Sets. In Exercises 37 and 38, use the indicat...
 72.39: Finite Population Correction Factor For Formulas 72 and 73 we assum...
 72.40: Confidence Interval from Small Sample Special tables are available ...
 72.41: . Interpreting Confidence Interval Limits Repeat Exercise 38 using ...
 72.42: Coping with No Success According to the Rule of Three, when we have...
 72.43: OneSided Confidence Interval A onesided claim about a population pr...
Solutions for Chapter 72: Estimating a Population Proportion
Full solutions for Elementary Statistics  12th Edition
ISBN: 9780321836960
Solutions for Chapter 72: Estimating a Population Proportion
Get Full SolutionsThis expansive textbook survival guide covers the following chapters and their solutions. Since 43 problems in chapter 72: Estimating a Population Proportion have been answered, more than 201588 students have viewed full stepbystep solutions from this chapter. This textbook survival guide was created for the textbook: Elementary Statistics, edition: 12. Elementary Statistics was written by and is associated to the ISBN: 9780321836960. Chapter 72: Estimating a Population Proportion includes 43 full stepbystep solutions.

aerror (or arisk)
In hypothesis testing, an error incurred by failing to reject a null hypothesis when it is actually false (also called a type II error).

Analytic study
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

Bayes’ theorem
An equation for a conditional probability such as PA B (  ) in terms of the reverse conditional probability PB A (  ).

Bivariate normal distribution
The joint distribution of two normal random variables

Chance cause
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.

Conditional probability distribution
The distribution of a random variable given that the random experiment produces an outcome in an event. The given event might specify values for one or more other random variables

Conditional probability mass function
The probability mass function of the conditional probability distribution of a discrete random variable.

Continuous uniform random variable
A continuous random variable with range of a inite interval and a constant probability density function.

Control chart
A graphical display used to monitor a process. It usually consists of a horizontal center line corresponding to the incontrol value of the parameter that is being monitored and lower and upper control limits. The control limits are determined by statistical criteria and are not arbitrary, nor are they related to speciication limits. If sample points fall within the control limits, the process is said to be incontrol, or free from assignable causes. Points beyond the control limits indicate an outofcontrol process; that is, assignable causes are likely present. This signals the need to ind and remove the assignable causes.

Cook’s distance
In regression, Cook’s distance is a measure of the inluence of each individual observation on the estimates of the regression model parameters. It expresses the distance that the vector of model parameter estimates with the ith observation removed lies from the vector of model parameter estimates based on all observations. Large values of Cook’s distance indicate that the observation is inluential.

Counting techniques
Formulas used to determine the number of elements in sample spaces and events.

Critical region
In hypothesis testing, this is the portion of the sample space of a test statistic that will lead to rejection of the null hypothesis.

Curvilinear regression
An expression sometimes used for nonlinear regression models or polynomial regression models.

Degrees of freedom.
The number of independent comparisons that can be made among the elements of a sample. The term is analogous to the number of degrees of freedom for an object in a dynamic system, which is the number of independent coordinates required to determine the motion of the object.

Enumerative study
A study in which a sample from a population is used to make inference to the population. See Analytic study

Error of estimation
The difference between an estimated value and the true value.

Event
A subset of a sample space.

Exhaustive
A property of a collection of events that indicates that their union equals the sample space.

Fraction defective control chart
See P chart

Frequency distribution
An arrangement of the frequencies of observations in a sample or population according to the values that the observations take on