Two-Sample Tests of Hypothesis
Questions 1, 2, and 3 refer to the following problem:
A recent study focused on the amount of money single men and women save monthly. The
information is summarized below. Assume that the population standard deviations are e

Correlation and Linear Regression (Key)
1. What is the chart called when the paired data (the dependent and independent variables) are
plotted?
A. Scatter diagram
B. Bar chart
C. Pie chart
D. Histogram
2. Which of the following statements regarding the co

One-Sample Tests of Hypothesis (Key)
1. A null hypothesis makes a claim about a
A. Population parameter
B. Sample statistic
C. Sample mean
D. Type II error
2. What is the level of significance?
A. Probability of a Type II error
B. Probability of a Type I

Estimation and Confidence Intervals
1. The proportion of junior executives leaving large manufacturing companies within three years
is to be estimated within 3 percent. The 0.95 degree of confidence is to be used. A study
conducted several years ago revea

Estimation and Confidence Intervals (Key)
1. The proportion of junior executives leaving large manufacturing companies within three years
is to be estimated within 3 percent. The 0.95 degree of confidence is to be used. A study
conducted several years ago

Two-Sample Tests of Hypothesis (Key)
Questions 1, 2, and 3 refer to the following problem:
A recent study focused on the amount of money single men and women save monthly. The
information is summarized below. Assume that the population standard deviations

Analysis of Variance
1. Analysis of variance is used to
A. compare nominal data
B. compute t test
C. compare population proportions
D. simultaneously compare several population means
2. In ANOVA, an F statistic is used to test a null hypothesis such as:
A

One-Sample Tests of Hypothesis
1. A null hypothesis makes a claim about a
A. Population parameter
B. Sample statistic
C. Sample mean
D. Type II error
2. What is the level of significance?
A. Probability of a Type II error
B. Probability of a Type I error

Sampling Methods and the Central Limit Theorem
1. When all the items in a population have an equal chance of being selected for a sample, the
process is called _.
A. Simple random sampling
B. z-score
C. Sampling error
D. Nonprobability sampling
2. What is

Numerical Measures
1. The sum of the deviations of each data value from this measure of central location will always
be zero.
A. Mode
B. Mean
C. Median
D. Standard deviation
2. Which measures of central location are not affected by extremely small or extr

Frequency Tables, Frequency Distributions, and Graph
1. A small sample of computer operators shows monthly incomes of $1,950, $1,775, $2,060,
$1,840, $1,795, $1,890, $1,925 and $1,810. What are these ungrouped numbers called?
A. Histogram
B. Class limits

Continuous Probability Distributions (Key)
1. The shape of any uniform probability distribution is
A. Negatively skewed
B. Positively skewed
C. Rectangular
D. Bell shaped
2. The upper and lower limits of a uniform probability distribution are
A. positive

Correlation and Linear Regression
1. What is the chart called when the paired data (the dependent and independent variables) are
plotted?
A. Scatter diagram
B. Bar chart
C. Pie chart
D. Histogram
2. Which of the following statements regarding the coeffici

Analysis of Variance (Key)
1. Analysis of variance is used to
A. compare nominal data
B. compute t test
C. compare population proportions
D. simultaneously compare several population means
2. In ANOVA, an F statistic is used to test a null hypothesis such

Continuous Probability Distributions (Key)
1. The shape of any uniform probability distribution is
A. Negatively skewed
B. Positively skewed
C. Rectangular
D. Bell shaped
2. The upper and lower limits of a uniform probability distribution are
A. positive

Sampling Methods and the Central Limit Theorem (Key)
1. When all the items in a population have an equal chance of being selected for a sample, the
process is called _.
A. Simple random sampling
B. z-score
C. Sampling error
D. Nonprobability sampling
2. W

Numerical Measures (Key)
1. The sum of the deviations of each data value from this measure of central location will always
be zero.
A. Mode
B. Mean
C. Median
D. Standard deviation
2. Which measures of central location are not affected by extremely small o

Frequency Tables, Frequency Distributions, and Graph (Key)
1. A small sample of computer operators shows monthly incomes of $1,950, $1,775, $2,060,
$1,840, $1,795, $1,890, $1,925 and $1,810. What are these ungrouped numbers called?
A. Histogram
B. Class l