Clever | Portal Login - Powered PRD.06_SM.2_SY Screwy G expensi Inbox (955) - 889 A ALEKS-Amarian UpStudy Thoth A www-awy.aleks.com/alekscgi/x/Isl.exe/1o_u-IgNsIkr7j8P3jH-IQUhQ7UhjLUg6NO6tj9qFItz6nQLOPsPMGhYexjXecyRcT1HqxxA6CecOvdKuHbIv4wcPmg_rc54... 12-2,3 Data Question 4 of 15 (1 point) | Question Attempt: 1 of Unilmited Amarian Frank wants to find the average time it takes Washington High School students to run a lap around the track. So he will consider 40 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. minutes inches centimeters hours feet (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 40 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 40 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 (3) Mar 14 1:16

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UpStudy AI · Accepted Answer

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:

- minutes
- inches
- centimeters
- hours
- feet

**Analysis of Units:**
- **Minutes**: This is a valid unit for measuring time.
- **Inches**: This is a unit of length, not time.
- **Centimeters**: This is also a unit of length, not time.
- **Hours**: This is another valid unit for measuring time.
- **Feet**: This is a unit of length, not time.

**Conclusion for Part (a)**: The valid units for measuring time are **minutes** and **hours**.

### Part (b): Best Procedure to Find Average Time

Now, we need to evaluate the best procedure to find the average time it takes for students to run a lap around the track. The options provided 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 40 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 40 students to run a lap around the track and have them state their own times.

**Analysis of Procedures:**
1. **Ask for 40 volunteers**: This could lead to bias, as those who volunteer may be faster or more athletic.
2. **Measure the times of 40 volunteers**: Similar to the first option, this could also lead to bias for the same reasons.
3. **Randomly pick 40 students and measure their times**: This is the best option as it minimizes bias and ensures a representative sample of the student population.
4. **Randomly pick 40 students and have them state their own times**: This could lead to inaccuracies, as students may not accurately report their times.

**Conclusion for Part (b)**: The best procedure is to **randomly pick 40 students to run a lap around the track and measure their times**.

### Summary of Answers
- **Part (a)**: The units of measurement that could be used are **minutes** and **hours**.
- **Part (b)**: The best procedure is to **randomly pick 40 students to run a lap around the track and measure their times**.
**Part (a):** Use **minutes** or **hours** to measure time. **Part (b):** Randomly select 40 students to run a lap and measure their times to find the average.

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