Chapter 3 Descriptive Statistics: Numerical Measures Measures that are computed for data from a sample are sample statistics, if they are computed for data from a population, they are population para
Chapter 2 Descriptive Statistics: Tabular and Graphical Presentations Summarizing Qualitative Data Frequency Distribution - A frequency distribution is a tabular summary of data showering the number
PS 8 Solutions Key
Textbook Questions
1. Chapter 7, question 33 (p. 326).
( ) = p
p(1 p)
n
n = 100: p
(.55)(.45)
.0497
100
n = 200: p
(.55)(.45)
.0352
200
n = 500: p
(.55)(.45)
.0222
500
n = 10
PS 9 Solutions Key
Textbook Questions (ASWCC, 12th Edition)
1. Chapter 9, question 1 (p. 387).
a. Because the manager says $600 or less, this includes the equality ( = 600), so
the managers claim shou
Economics 146
Fall 2016
Exercise 1 Answers
1. One of my neighbors, Mrs. Hilton, is known by her driving style - she takes corners on two
wheels. Mrs. Hilton's benefit function for speed, S, is
B(S) =
Chapter 9 Hypothesis Tests Developing Null and Alternative Hypotheses Testing Research Hypotheses - In research studies, the null and alternative hypotheses should be formulated so that the rejection
Chapter 8 Interval Estimation Population Mean: Known - To develop an interval estimate of a population mean, either the population standard deviation or the sample standard deviation s must be used
Chapter 7 Sampling and Sampling Distributions Simple Random Sampling - The meaning of a simple random sample and the process of selecting a simple random sample depends on whether the population is f
Chapter 6 Continuous Probability Distributions pp. 224-228 Uniform Probability Distribution - If the probability of an event in any one given interval is equal to the probability of the event in any
Chapter 1 Data and Statistics Applications in Business and Economics - Accounting - Finance - Marketing - Production - Economics Data - Data are the facts and figures collected, analyzed, and summari
Chapter 5 Discrete Probability Distributions Random Variables - Random variables explain experimental outcomes using numerical values Discrete Random Variables - A discrete random variable is a rando
Chapter 4 Introduction to Probability Probability is a numerical measure of the likelihood that an event will occur. Probability values are always assigned on a scale from 0 to 1; a probability near
PS 11 Solutions Key
Textbook Questions (ASWCC, 12th Edition)
1. Chapter 12, question 22 (p. 535).
Hypotheses:
H0: population proportions are as listed in table below.
Ha: not all population proportion