Solutions for Introduction to Probability and Statistics, 15th Edition Mendenhall (All Chapters included)
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Course
Probability
Institution
Probability
Complete Solutions Manual for Introduction to Probability and Statistics, 15th Edition by William Mendenhall, Robert J. Beaver, Barbara M. Beaver ; ISBN13: 9781337554428. (Full Chapters included Ch 1 to 15).....1. Describing Data with Graphs.
2. Describing Data with Numerical Measures.
3. Describ...
Section 1.1
1.1.1 The experimental unit, the individual or object on which a variable is measured, is the student.
1.1.2 The experimental unit on which the number of errors is measured is the exam.
1.1.3 The experimental unit is the patient.
1.1.4 The experimental unit is the azalea plant.
1.1.5 The experimental unit is the car.
1.1.6 “Time to assemble” is a quantitative variable because a numerical quantity (1 hour, 1.5 hours, etc.) is
measured.
1.1.7 “Number of students” is a quantitative variable because a numerical quantity (1, 2, etc.) is measured.
1.1.8 “Rating of a politician” is a qualitative variable since a quality (excellent, good, fair, poor) is measured.
1.1.9 “State of residence” is a qualitative variable since a quality (CA, MT, AL, etc.) is measured.
1.1.10 “Population” is a discrete variable because it can take on only integer values.
1.1.11 “Weight” is a continuous variable, taking on any values associated with an interval on the real line.
1.1.12 Number of claims is a discrete variable because it can take on only integer values.
1.1.13 “Number of consumers” is integer-valued and hence discrete.
1.1.14 “Number of boating accidents” is integer-valued and hence discrete.
1.1.15 “Time” is a continuous variable.
1.1.16 “Cost of a head of lettuce” is a discrete variable since money can be measured only in dollars and cents.
1.1.17 “Number of brothers and sisters” is integer-valued and hence discrete.
1.1.18 “Yield in bushels” is a continuous variable, taking on any values associated with an interval on the real
line.
1.1.19 The statewide database contains a record of all drivers in the state of Michigan. The data collected
represents the population of interest to the researcher.
1.1.20 The researcher is interested in the opinions of all citizens, not just the 1000 citizens that have been
interviewed. The responses of these 1000 citizens represent a sample.
1.1.21 The researcher is interested in the weight gain of all animals that might be put on this diet, not just the
twenty animals that have been observed. The responses of these twenty animals is a sample.
1.1.22 The data from the Internal Revenue Service contains the records of all wage earners in the United States.
The data collected represents the population of interest to the researcher.
1.1.23 a The experimental unit, the item or object on which variables are measured, is the vehicle.
b Type (qualitative); make (qualitative); carpool or not? (qualitative); one-way commute distance
(quantitative continuous); age of vehicle (quantitative continuous)
c Since five variables have been measured, this is multivariate data.
1.1.24 a The set of ages at death represents a population, because there have only been 38 different presidents
in the United States history.
b The variable being measured is the continuous variable “age”.
c “Age” is a quantitative variable.
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