Test Name: Quiz 1
1.
Identify the population being studied and the sample chosen.
The number of times 4 out of 33 students on your floor order take-out in a week.
Answer:
Population: The 33 students on your floor.
A) Sample: The 4 students selected on you
Test Name: Quiz 1 fall 2014
1.
Identify the population being studied and the sample chosen.
The number of hours a group of 7 children in Mrs. Smith's kindergarten class watch television in a day.
Answer:
Population: 7 children selected in Mrs. Smith's kin
Comparing Two Population Means (-Known)
Margin of Error of a Confidence Interval for the Difference between Two
Population Means ( -Known)
When both population standard deviations are known, the samples taken are independent,
simple random samples, and ei
Numerical Descriptions of Data
Example 3.1: Calculating the Sample Mean
Students were surveyed to find out the number of hours they
sleep per night during the semester. Here is a sample of their
self-reported responses. Calculate the mean.
5, 6, 8, 10, 4,
SOC/GEOG 280
Practice for Quiz 2
Your Name: _
All the work on the quiz must solely be your own. You may not use your text, cell phone or any other materials not listed here. You
may use your calculator. You may bring a paper copy of the Beginning Statisti
SOC/GEOG 280 Fall 2014
Practice for Quiz 3
Your Name: _
DIRECTIONS FOR ACTUAL QUIZ: All the work on the quiz must solely be your own. You may not use your text, cell phone or
any other materials not listed here. You may use your calculator. You may bring
Test Name: Quiz 3 draft 1
1.
A fast food manufacturer wishes to know how many fast food meals people over age 27 eat each week. Suppose a sample of
size 502 is drawn with . Assume . Construct the 85% confidence interval for the mean number of fast food me
Test Name: Practice Quiz 2 answer sheet
1.
2.
3.
or
or
cfw_ BB, BG, GB, GG
4.
or
5.
or
6.
7.
8.
or
or
or
9.
10.
Mutually Exclusive
11.
or
12.
Dependent
13.
Step 1:
Step 2:
Step 3:
Step 4:
Step 5:
14.
Discrete
15.
Continuous
16.
Yes, Since the probabiliti
SOC/GEOG 280
Quiz 2 Review: Using the Normal Curve
27. Calculate the standard score of the given X value, X = 44.7, where = 36.9, = 37.5. Round your answer
to two decimal places.
Answer:
0.21
28. Find the area under the normal curve to the left of z = 0.7
Test Name: Quiz 2 10-15-14
1.
A card is drawn from a standard deck of 52 playing cards. What is the probability that the card will be a diamond and not a
jack? Write your answer as a fraction or a decimal number rounded to four decimal places.
3
13
Answer