Question

Listed below are amounts​ (in millions of​ dollars) collected from parking meters by a security company in a certain city. A larger data set was used to convict 5 members of the company of grand larceny. Find the mean and median for each of the two samples and then compare the two sets of results. Do the limited data listed here show evidence of stealing by the security​ company's employees?

Security​ Company:
1.2
1.4
1.2
1.4
1.7
1.5
1.8
1.5
1.5
1.6

Other​ Companies:
1.7
1.8
1.6
1.9
1.6
2.2
1.8
1.9
1.9
2.3
Question content area bottom
Part 1
Find the means.
The mean for the security company is ​$ enter your response here million and the mean for the other companies is ​$ enter your response here million.
​(Type integers or decimals rounded to two decimal places as​ needed.)


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Answer 1

To find the mean, we sum up all the values and divide by the number of values.

For the Security Company:

Mean = (1.2 + 1.4 + 1.2 + 1.4 + 1.7 + 1.5 + 1.8 + 1.5 + 1.5 + 1.6) / 10

Mean = 1.5 million dollars

For the Other Companies:

Mean = (1.7 + 1.8 + 1.6 + 1.9 + 1.6 + 2.2 + 1.8 + 1.9 + 1.9 + 2.3) / 10

Mean = 1.85 million dollars

Therefore, the mean for the Security Company is $1.5 million and the mean for the Other Companies is $1.85 million.