The owner of a company wanted to understand the length of phone call conversations between the company's employees and their customers. The owner took a random sample of phone calls and recorded the length, (minutes), then summarised these in the following frequency table:

a)How many phone calls lasted longer than 40 minutes and less than or equal to 60 minutes?

b) Calculate the cumulative relative frequency, as a percentage, for the (40, 60] class. SHOW BASIC WORKINGS.

c) Please interpret your answer to part b), in the context of this question.

Home > My Subjects > STAM4000 T2 2022 > Assessment 03: Quiz Question 1 Answer saved Marked out of 5.00 Flag question The owner of a company wanted to understand the length of phone call conversations between the company's employees and their customers. The owner took a random sample of phone calls and recorded the length, (minutes), then summarised these in the following frequency table: Class (minutes) Frequency (0, 20] 45 (20, 40] 52 (40, 60] 68 (60, 80] 35 Total 200 a) How many phone calls lasted longer than 40 minutes and less than or equal to 60 minutes? b) Calculate the cumulative relative frequency, as a percentage, for the (40, 60] class. SHOW BASIC WORKINGS. c) Please interpret your answer to part b), in the context of this question. B MacBook Air O 20 Q F4 F5