Question

QUESTION 4

1. TABLE 2-5
   
   The following are the duration in minutes of a sample of long-distance phone calls made within the continental United States reported by one long-distance carrier.
   
   Relative
   Time (in Minutes) Frequency
   0 but less than 5 0.37
   5 but less than 10 0.22
   10 but less than 15 0.15
   15 but less than 20 0.10
   20 but less than 25 0.07
   25 but less than 30 0.07
   30 or more 0.02
   
   
   Referring to Table 2-5, what is the cumulative relative frequency for the percentage of calls that lasted 20 or more minutes?

   		0.10
   		0.84
   		0.16
   		0.47

Answer 1

Solution Time Cin Frequency cumuwative minutes o but less than 3? s but less thah 0. 22 lo but less than IS 1S IS bu, less than 2。 .1 。 20 but less thah o2 2.5.but less +kan 3 o | ㆁ. ο O 9 8 3 o or more unwlatireeletive hreuency lasted 2o or naxe O-gy Correct option is o.84