According to data from the city of Toronto, Ontario, Canada, t...

Question

According to data from the city of Toronto, Ontario, Canada, there were nearly 112,000 parking infractions in the city for December 2020, with fines totaling over 5,500,000 Canadian dollars. The fines (in Canadian dollars) for a random sample of 105 parking infractions in Toronto, Ontario, Canada, for December 2020 are listed below. (Source: City of Toronto)

In Exercises 1–5, use technology. If possible, print your results.

Find the sample mean of the data.

Table displaying a dataset of parking fines in Toronto, with values ranging from 30 to 250 Canadian dollars.

Table displaying a sample of parking fines in Canadian dollars for December 2020 in Toronto, with values organized in rows and columns.

In Exercises 1–5, use technology. If possible, print your results.

Find the sample mean of the data.

Accepted Answer

Welcome back, everyone. In a small town, the local police department issued 10 parking tickets in one week. The fines and dollars for these 10 tickets were 30 $40.50 dollars, $35.60 dollars, $30.45 5040 and 35. Find the sample mean of the parking fines. We're given 4 answer choices in dollars. A 39, B 40, C 41.50, D 43. So we want to identify the sample mean X bar. Let's recall that we have to sum all of our values. So we're going to sum all of the X values we're giving them in our data set, and we're going to divide by N, which is our sample size. It is 10, right? We have 10 data points. So let's begin our summation. 30 plus 40. Plus 50+. 35 Plus 60 + 30 + 45 plus 50. Now, let's introduce a bit more space to ensure that we have all of those values on the same line. So we have 45, 50, and the last two are 40. Plus 35, and we're dividing by 10. Now, let's evaluate the numerator. We end up with 415 and we're dividing by 10. So when we divide, we get 41.50 in dollars. Therefore, the correct answer corresponds to the answer to C. Thank you for watching.

��app

Key Concepts

Sample Mean

Descriptive Statistics

Data Visualization

Watch next