Cl No Fis A \( \times \) Up Ne Ne Ne Ne Ne \( N \epsilon \) \( \mathrm{N} \epsilon \) \( \mathrm{N} \epsilon \) \( \mathrm{N} \epsilon \) Ne \( \mathrm{N} \epsilon \) \( \mathrm{N} \in \) Ne www-awy.aleks.com/alekscgi/x/Isl.exe/1o_u-lgNsIkr7j8P3jH-IQUhQ7UhjLUg6NO6tj9qFItz6nQLOPsPMGhYDIjVdwuDfGpw106nKnt|ZVVgtxc4aFujsQ2aPzb7YI... 12-2,3 Data Question 1 of 15 (1 point) | Question Attempt: 1 of Unlimited Amarian 1 2 3 4 5 6 7 8 9 10 11 12 13 Sam wants to find the average time it takes Lincoln High School students to run a lap around the track. So he will consider a sample of students to find the average time. Answer the questions below. (a) Which unit(s) could be used for the unit of measurement? Check all that apply. pounds hours seconds minutes grams (b) Which of the procedures below would be the best way to find the average time? Ask for 40 volunteers to run a lap around the track and have them state their own times. Measure the times of 4 volunteers who run a lap around the track. Randomly pick 40 students to run a lap around the track and measure their times. Randomly pick 4 students to run a lap around the track and have them state their own times. Check Save For Later Submit Assignment © 2025 McGraw Hill LLC. All Rights Reserved. Terms of Use. Privacy Center Accessibility Sign out (5) Mar 14 11:59

Let's break down the problem step by step. ### Part (a): Units of Measurement We need to determine which units could be used to measure the time it takes for students to run a lap around the track. The options provided are: - pounds - hours - seconds - minutes - grams **Analysis of Options:** - **Pounds**: This is a unit of weight, not time. **Not applicable.** - **Hours**: This is a unit of time. **Applicable.** - **Seconds**: This is also a unit of time. **Applicable.** - **Minutes**: This is another unit of time. **Applicable.** - **Grams**: This is a unit of weight, not time. **Not applicable.** **Conclusion for Part (a)**: The applicable units for measuring time are **hours, seconds, and minutes**. ### Part (b): Best Procedure to Find Average Time Now, we need to evaluate the procedures provided to find the average time it takes for students to run a lap around the track. The options are: 1. Ask for 40 volunteers to run a lap around the track and have them state their own times. 2. Measure the times of 4 volunteers who run a lap around the track. 3. Randomly pick 40 students to run a lap around the track and measure their times. 4. Randomly pick 4 students to run a lap around the track and have them state their own times. **Analysis of Options:** 1. **Ask for 40 volunteers**: This could lead to bias, as volunteers may be more athletic or interested in running. **Not ideal.** 2. **Measure the times of 4 volunteers**: This is a very small sample size and may not represent the average well. **Not ideal.** 3. **Randomly pick 40 students**: This method reduces bias and provides a larger sample size, which is more likely to represent the average time accurately. **Ideal.** 4. **Randomly pick 4 students**: While random selection is good, the sample size is too small to provide a reliable average. **Not ideal.** **Conclusion for Part (b)**: The best procedure to find the average time is to **randomly pick 40 students to run a lap around the track and measure their times**. ### Final Answers - **Part (a)**: Applicable units are **hours, seconds, minutes**. - **Part (b)**: The best procedure is to **randomly pick 40 students to run a lap around the track and measure their times**.