ECON 338/ENVR 305
CLICKER QUESTIONS
Statistics – Question Set #4 (from Chapter6)
As the sample size of a random sample increases, the mean
of the sample mean _____.
1.
2.
3.
4.
5.
Response
Counter
remains the same
increases
decreases
becomes less accurate
cannot be determined from the
above information
0%
1.
0%
2.
0%
0%
3.
4.
0%
5.
The mean and the standard deviation of a normally distributed
population is 30.5 and 3.5, respectively. Find the standard deviation
of the sample mean for a sample size of 10.
1.
2.
3.
4.
5.
3.5
0.35
35
3.05
1.11
0%
Response
Counter
1.
0%
2.
0%
0%
3.
4.
0%
5.
A school district is assumed to have 8,000 5th graders. The
average weight of a 5th grader is 75 pounds, with a
standard deviation of 20 pounds. If a random sample of 50
students is drawn, find the probability that the average
weight of a student from the drawn sample will be less than
70 pounds.
1.
2.
3.
4.
5.
1.07
0.00
1.00
0.038
0.962
0%
Response
Counter
1.
0%
2.
0%
0%
3.
4.
0%
5.
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Clicker Questions-Stats-4