Help please?!Lamont wants to determine his typical sprint time to run 100 meters. Which of the following methods will give him the most accurate measurement? A. Sprint the 100 meters several times throughout an hour and determine his average time to complete from the various runs. B. Sprint the 100 meters several times throughout the day and determine his fastest time from the various runs. C. Sprint the 100 meters several times throughout the week and determine his average time to complete from the various runs. D. Sprint the 100 meters several times throughout the month and determine his fastest time from the various runs.An electric company wants to determine the typical amount of energy usage for a 30-home neighborhood each month in the past year. Which of the following would give the company the most accurate measurement? A. Take the energy usage for one of the homes in the neighborhood for a year, and then multiply it by 30. B. Take the energy usage for all the homes in the neighborhood for a year, and then divide it by 12. C. Take the energy usage for three random homes in the neighborhood for the year, and then multiply it by 10. D. Take the energy usage for all the homes in the neighborhood for the year, and then divide it by 30.
Question
Answer:
1) The typical sprint time is found by computing the average of the different sprint times, therefore the choice is between option A and C. The average is more accurate when you have a lot of measurements, therefore, since Lamont can run more times in a week than in a day, the correct answer will be:C) Sprint the 100 meters several times throughout the week and determine his average time to complete from the various runs.
2) The typical amount of energy usage is the average usage for all the neighborhood in one month. Therefore, to calculate the average, you will have to consider the total amount of energy used in a year by all the houses and divide it by the number of months in one year. Therefore, the correct answer will be:
B) Take the energy usage of all the homes in the neighborhood for a year, and then divide it by 12.
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11 months ago
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