1. An electronics manufacturer test every 15th cell phone to verify that it is functioning properly. Identify the kind of sample that is being used.
Question 1 options:
Voluntary response sample 

Sample of convenience 

Stratified sample 

Systematic sample 
2. The names of all 35 students in a professor's class are written on identical slips of paper, and the slips are placed into a large glass jar. Then, the professor selects 10 random slips from the jar. Identify the kind of sample that is being used.
Question 2 options:
Stratified sample 

Simple random sample 

Sample of convenience 

Systematic sample 
5.
Match the relationship that holds for most data sets between the shape of the histogram and the values of the mean and median.
Question 5 options:
A 
Approximately symmetric 
B 
Skewed to the left 
C 
Skewed to the right 
1. 
The mean is noticeably greater than the median. 
2. 
The mean is approximately equal to the median. 
3. 
The mean is noticeably less than the median. 
6.
A sample of 10 cars of a certain type was selected. The number of miles that could be driven on a full tank of gas was reported as:
261, 283 ,310, 283, 286, 357, 258, 230, 277, 242
Compute the mean. Write only a number as your answer. Round your answer to one decimal place (for example: 270.7).
7.
The prices for a sample of items at an estate sale are:
58, 32, 26, 66, 57, 62, 13, 23
Compute the median. Write only a number as your answer. Round your answer to one decimal place (for example: 27.2).
8.
Question 8 options:
Match the following statements that refer to a bellshaped data set.
A 
Within two standard deviations of the mean 
B 
Within one standard deviation of the mean 
C 
Within three standard deviations of the mean 
1. 
Approximately 68% of the data lie in this interval 
2. 
Approximately 95% of the data lie in this interval 
3. 
All or almost all of the data lie in this interval 
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