httpswwwmathxlcomStudentPlayerHomeworkaspxhomeworkld29873104

https://www.mathxl.com/Student/PlayerHomework.aspx?homeworkld-2987310428questionld-1&flushed-false; Fatima Ace omework: Section 3.3 Homework 33.1 Ex. Scorer O of i pt Hw Score: 0% (0 of 6 pts) A sample of college stadents was asked how much they spent monthly on cell phone plans. Approxinate the mean for the cost 0 Mondhly cell phone plan cost (5) Number of students 10.00-19.99 20.00-29.99 30.00-39 99 40.00-49 99 50.00-59.99 15 26 14 The mean for the cost is (Round to the nearest cent) Enter your answer in the answer box, theh click Check Ansver Save Number of students 5 13.2

Solution

Using the midpoints of each interval,

Thus,      
      
Mean = Sum(xf) / Sum(f) =    35.44776119   [ANSWER]

x	f	x f
15	5	75
25	15	375
35	26	910
45	14	630
55	7	385