- Description
QNT 275 Week 1 Practice Set
Chapter 01, Section 1.3, Problem 008a
Correct.
Indicate if the following variable is quantitative or qualitative.
The amount of time a student spent studying for an exam is a
variable.
Chapter 01, Supplementary Exercises, Problem 043a
Correct.
State whether the following is an example of sampling with replacement or without replacement.
Selecting 60 patients out of 100 to test a new drug is sampling
replacement.
8th-ed Chapter 01, Section 1.2, Problem 006a
Correct.
Explain whether the following constitutes a population or a sample.
Opinions on a certain issue obtained from all adults living in a city constitute a
.
8th-ed Chapter 01, Section 1.3, Problem 009
The following table gives the number of dog bites reported to the police last year in six cities.
City Number of Bites
Center City 19
Elm Grove 38
Franklin 36
Bay City 33
Oakdale 38
Sand Point 53
With reference to this table, what is 38?
a measurement
a data set
a member
a variable
8th-ed Chapter 01, Section 1.3, Problem 011
Correct.
The following table gives the number of dog bites reported to the police last year in six cities.
City Number of Bites
Center City 46
Elm Grove 30
Franklin 51
Bay City 41
Oakdale 11
Sand Point 5
- What is the variable for this data set?
The variable for this data set is the
.
- How many observations are in this data set?
There is/are observation(s) in this data set.
- How many elements does this data set contain?
There is/are element(s) in this data set.
8th-ed Chapter 01, Section 1.4, Problem 017
Correct.
Classify the following quantitative variable as discrete or continuous.
The amount of gasoline put into a car at a gas station is a
variable.
8th-ed Chapter 01, Section 1.6, Problem 021a
Correct.
Classify the following as cross-section or time-series data.
The average prices of houses in 500 cities is
data.
8th-ed Chapter 01, Section 1.7, Problem 023a
Correct.
The following table lists six pairs of m and f values.
m 5 4 23 11 11 19
f 15 10 16 7 3 13
Calculate the value of the following: ∑f=
exact number, no tolerance
8th-ed Chapter 01, Section 1.7, Problem 028a
Correct.
Nine randomly selected customers at a local fast-food restaurant ordered meals having the following calorie counts: 975, 520, 1560, 872, 1025, 431, 361, 502, and 1118. Let y denote the calorie content of a meal ordered at this restaurant. Find the following sum.
∑y=
exact number, no tolerance