BMAL 590 ALC 9
Quantitative Research
Techniques Questions
(solved to Pass)
-You take a random sample of 100 students at your university and find
that
... [Show More] their average GPA is 3.1. If you use this information to help you
estimate the average GPA for all students at your university, then you
are doing what branch of statistics?
Descriptive statistics
Inferential statistics
Sample statistics
Population statistics
-A company has developed a new computer sound card whose average
lifetime is unknown. In order to estimate this average, 200 sound cards
are randomly selected from a large production line and tested; their
average lifetime is found to be 5 years. The 200 sound cards represent
a
parameter.
statistic.
sample.
population.
-A company has developed a new computer sound card whose average
lifetime is unknown. In order to estimate this average, 200 sound cards
are randomly selected from a large production line and tested; their
average lifetime is found to be 5 years. The five years represents a
parameter.
statistic.
sample.
population.
-A summary measure that is computed from a population is called a
sample.
statistic.
population.
parameter.
-Which of the following is a measure of the reliability of a statistical
inference?
A population parameter.
A significance level.
A descriptive statistic.
A sample statistic.
-The process of using sample statistics to draw conclusions about
population parameters is called
finding the significance level.
calculating descriptive statistics.
doing inferential statistics.
calculating the confidence level.
-Which of the following represents a population, as opposed to a
sample?
1,000 respondents to a magazine survey which has 500,000
subscribers.
The first 10 students in your class completing a final exam.
Every fifth student to arrive at the book store on your campus.
All registered voters in the State of Michigan.
-A study in under way to determine the average height of all 32,000
adult pine trees in a certain national forest. The heights of 500
randomly selected adult pine trees are measured and analyzed. The
sample in this study is
the average height of the 500 randomly selected adult pine
trees.
the average height of all the adult pine trees in this forest.
all adult pine trees in this forest.
the 500 adult pine trees selected at random selected at
random from this forest.
-The significance level of a statist [Show Less]