BSTAT test 1-chapter ½ questions and
answers already passed
a. GSA, GSR, GSP, GAR, GAP,GRP, SAR, SAP,SRP, ARP
b. 0.1,0.1,0.1 - correct answer ✔✔A) List the 10 possible samples (without replacement) of size
3 that can be obtained from the population of five officials.
Gov (G)
Sec of State (S)
Att general (A)
Rep (R)
Press Sec (P)
B. What is the chance that the first sample in your list is selected?
The sample must be representative in order to use inferential statistics to draw conclusions
about the entire population. - correct answer ✔✔In sampling, explain why obtaining a
representative sample is important.
causation - correct answer ✔✔Observational studies can reveal only association, whereas
designed experiments can help establish ....
SRS - correct answer ✔✔What is the acronym used for simple random sampling without
replacement?
, In an observational study, researchers simply observe characteristics and take measurements, as
in a sample survey. - correct answer ✔✔Observational study
in a designed experiment, researchers impose treatments and controls and then observe
characteristics and take measurements. - correct answer ✔✔Designed experiment
a. The population is all adults in the country. The sample is the 1000 adults surveyed.
b. the percentage is a descriptive statistic, since it summarizes information about how much of
the sample favors breaking up the megabanks. - correct answer ✔✔A nationwide survey of
1000 adults found that 50% of respondents favored a plan to break up the 12 megabanks, which
then controlled about 69% of the banking industry. Complete parts (a) and (b) below.
a. Identify the population and sample for this study. Choose the correct answer below.
b. Is the percentage provided a descriptive statistic or an inferential statistic? Explain your
answer.
Descriptive, because the statistics are a summary of the average salaries of professional athletes
in three sports - correct answer ✔✔Is the following study descriptive or inferential?
In a statistical magazine, average professional athletes' salaries in three sports were compiled
and compared for the years 1993 and 2003.
a. Which of these are possible dangers of nonresponse? Select all that apply.
- Those who feel strongly about the subject are more likely to respond.
b. What is a consequence of such low response rates?
answers already passed
a. GSA, GSR, GSP, GAR, GAP,GRP, SAR, SAP,SRP, ARP
b. 0.1,0.1,0.1 - correct answer ✔✔A) List the 10 possible samples (without replacement) of size
3 that can be obtained from the population of five officials.
Gov (G)
Sec of State (S)
Att general (A)
Rep (R)
Press Sec (P)
B. What is the chance that the first sample in your list is selected?
The sample must be representative in order to use inferential statistics to draw conclusions
about the entire population. - correct answer ✔✔In sampling, explain why obtaining a
representative sample is important.
causation - correct answer ✔✔Observational studies can reveal only association, whereas
designed experiments can help establish ....
SRS - correct answer ✔✔What is the acronym used for simple random sampling without
replacement?
, In an observational study, researchers simply observe characteristics and take measurements, as
in a sample survey. - correct answer ✔✔Observational study
in a designed experiment, researchers impose treatments and controls and then observe
characteristics and take measurements. - correct answer ✔✔Designed experiment
a. The population is all adults in the country. The sample is the 1000 adults surveyed.
b. the percentage is a descriptive statistic, since it summarizes information about how much of
the sample favors breaking up the megabanks. - correct answer ✔✔A nationwide survey of
1000 adults found that 50% of respondents favored a plan to break up the 12 megabanks, which
then controlled about 69% of the banking industry. Complete parts (a) and (b) below.
a. Identify the population and sample for this study. Choose the correct answer below.
b. Is the percentage provided a descriptive statistic or an inferential statistic? Explain your
answer.
Descriptive, because the statistics are a summary of the average salaries of professional athletes
in three sports - correct answer ✔✔Is the following study descriptive or inferential?
In a statistical magazine, average professional athletes' salaries in three sports were compiled
and compared for the years 1993 and 2003.
a. Which of these are possible dangers of nonresponse? Select all that apply.
- Those who feel strongly about the subject are more likely to respond.
b. What is a consequence of such low response rates?
