Scott Brim,Chief Financial Officer of Space Mall,Inc.,wants to better understand the busiest business hours during the weekend.There are door sensors that approximately count the number of people who enter the mall.The table below presents the average number of people coming in during the weekend,for the last month: The relative frequency of the fourth class interval is _________.

Question

Scott Brim,Chief Financial Officer of Space Mall,Inc.,wants to better understand the busiest business hours during the weekend.There are door sensors that approximately count the number of people who enter the mall.The table below presents the average number of people coming in during the weekend,for the last month:  The relative frequency of the fourth class interval is _________.

Quizplus · Accepted Answer

To determine the relative frequency of the fourth class interval, we need to first determine the total number of people who entered during the weekend in the last month. Adding up the entries, we get a total of 874. The fourth class interval is 75-99, which had an average count of 127.5. To find the relative frequency, we divide the average count of the fourth class interval by the total number of people who entered: 127.5/874 = 0.1459. Rounded to two decimal places, this gives us a relative frequency of 0.14, which is the closest answer choice. Therefore, the best choice is C.