STATISTICS FOR PEOPLE WHO THINK THEY
HATE STATISTICS SALKIND FREY PRACTICE
QUESTIONS AND DETAILED SOLUTIONS
◉ A news service conducted a survey of
1058
adults ages 18 years or older in a certain country, August
31−September
2, 2015. The respondents were asked, "Of every tax dollar that goes
to the federal government, how many cents of each dollar would you
say are wasted?" The four possible responses are that the federal
government wastes less than 10 cents, between 11 cents and 25
cents, between 26 cents and 50 cents, or 51 cents or more. Of the
1058
individuals surveyed,
34%
indicated that 51 cents or more is wasted. The news service
reported that
34%
of all adults in the country 18 years or older believe the federal
government wastes at least 51 cents of each dollar spent, with a
margin of error of
3%
,and a
90%
level of confidence. Complete parts (a) through (e) below..
Answer: What is the research objective?
To determine the percent of adults in the country who believe the
federal government wastes 51 cents or more of every dollar.
(b) What is the population?
Adults in the country aged 18 years or older
(c) What is the sample?
The
1058
adults in the country that were surveyed
◉ It is extremely important for a researcher to clearly define the
variables in a study because this helps to determine the type of
analysis that can be performed on the data. For example, if a
researcher wanted to describe
basketball players
, based on
jersey
number,
what level of measurement would the variable
"jersey number"
be? Now suppose the researcher felt that certain
players who were of higher
caliber
received higher
numbers.
Does the level of measurement of the variable change? If so, how?.
Answer: What is the level of measurement of the variable
"jersey number"
in the original scenario?
Nominal
Does the level of measurement of the variable change in the second
scenario? Select the correct choice below and, if necessary, fill in the
answer box within your choice.
Yes, it changes to
HATE STATISTICS SALKIND FREY PRACTICE
QUESTIONS AND DETAILED SOLUTIONS
◉ A news service conducted a survey of
1058
adults ages 18 years or older in a certain country, August
31−September
2, 2015. The respondents were asked, "Of every tax dollar that goes
to the federal government, how many cents of each dollar would you
say are wasted?" The four possible responses are that the federal
government wastes less than 10 cents, between 11 cents and 25
cents, between 26 cents and 50 cents, or 51 cents or more. Of the
1058
individuals surveyed,
34%
indicated that 51 cents or more is wasted. The news service
reported that
34%
of all adults in the country 18 years or older believe the federal
government wastes at least 51 cents of each dollar spent, with a
margin of error of
3%
,and a
90%
level of confidence. Complete parts (a) through (e) below..
Answer: What is the research objective?
To determine the percent of adults in the country who believe the
federal government wastes 51 cents or more of every dollar.
(b) What is the population?
Adults in the country aged 18 years or older
(c) What is the sample?
The
1058
adults in the country that were surveyed
◉ It is extremely important for a researcher to clearly define the
variables in a study because this helps to determine the type of
analysis that can be performed on the data. For example, if a
researcher wanted to describe
basketball players
, based on
jersey
number,
what level of measurement would the variable
"jersey number"
be? Now suppose the researcher felt that certain
players who were of higher
caliber
received higher
numbers.
Does the level of measurement of the variable change? If so, how?.
Answer: What is the level of measurement of the variable
"jersey number"
in the original scenario?
Nominal
Does the level of measurement of the variable change in the second
scenario? Select the correct choice below and, if necessary, fill in the
answer box within your choice.
Yes, it changes to
