_______1. (3 points) Asurvey is conducted to measure student and faculty opinion
ID: 2951205 • Letter: #
Question
_______1. (3 points) Asurvey is conducted to measure student and faculty opinions on theproposal to eliminate the Board of Regents. A random sampleof 100 students and 50 faculty was taken and their opinions wererecorded. Which type of sampling design was used?
A. Randomized Block Design.
B. Simple Random Sample.
C. Stratified Sampling Design.
D. Completely randomized Design.
E. Multistage Random Sample.
_______2. (3 points) A fisheriesbiologist collected a sample of 200 rainbow trout from the MadisonRiver. If the average length of the 200 sampled fish was 16.3inches, then the value “16.3” is a
A. Statistic.
B. Parameter.
C. Biased measure.
D. Explanatory variable.
_______3. (3 points) If a telephoneinterviewer calls a residence and there is no answer, then thesample may suffer from which kind of bias?
A. Undercoverage.
B. Non-response.
C. Response bias.
_______4. (3 points) The procedure inwhich an attempt is made to contact every individual in the entirepopulation is called
A. multistage.
B. voluntary response.
C. census.
D. simple random sampling.
_______5. (3 points) Samplingvariability refers to the way
A. a parameter will vary from population to population.
B. a statistic will vary from population to population.
C. a parameter will vary from sample to sample.
D. a statistic will vary from sample to sample.
_______6. (3 points) In order toreduce variability, it is important to
A. increase the sample size.
B. decrease the sample size.
C. increase the population size.
D. decrease the population size.
_______7. (3 points) Todetermine if a new gunpowder is superior to the standard powder, ascientist randomly assigned the new powder to 180 bullets and thestandard powder to 100 bullets. The bullets are then fired,and the velocity of each bullet is measured. This is anexample of a:
A. Completely randomized design.
B. Randomized block design.
C. Stratified Random Sample.
D. Matched Pairs Design.
E. Simple Random Sample.
_______8. (3 points) A nationaltelevision network wants to profile life in small towns. Among the 50 states, the network randomly chose Montana, Maine,Georgia and New Mexico to look for small towns. From eachstate, 10 towns with populations less than 5,000 were chosen tostudy. What type of design was used to select the towns?
A. Stratified random sampling.
B. Randomized block design.
C. Completely randomized design.
D. Multistage sampling.
E. Matched pairs design.
Explanation / Answer
1. Stratified sampling dedign (option c) 2. Statistic (option a) 3.Non-Response (option b) 4. Census (option c) 5. A statistic will vary from sample to sample.(option d) 6. Increase the sample size.(option a) 7. Completely randomized design.(option a) 8. Multistage sampling (option d)
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