TABLE 17 DATA FOR EIGHT CORDLESS TELEPHONES Overall Handset

TABLE 1.7 DATA FOR EIGHT CORDLESS TELEPHONES Overall Handset Talk Time Brand M Price () Score Voice Quality on Base Hours) AT&T; AT&T; Panasonic 4773B Panasonic 6592T Uniden Uniden Vtech Vtech 73 70 78 72 70 73 72 72 CL84100 TL92271 Excellent Very Good Very Good Very Good Very Good Very Good Excellent Very Good Yes 0 Yes 100 45 80 10 D2997 D1788 DS6521 CS6649 0 Yes 50 es a. What is the average price for the cordless telephones (to 2 decimals)? b. What is the average talk time for the cordless telephones (to 3 decimals)? hours c. What percentage of the cordless telephones have a voice quality of excellent? d. What percentage of the cordless telephones have a handset on the base?

Solution

a) Average Price = Total price / Number of cordless telephones

= (60 + 80 + 100 + 70 + 45 + 80 + 60 + 50)/8 = 545/8 = 68.12

b) Average talk time = Total talk time / No. of telephones = (7 + 7 + 13 + 13 + 10 + 7 + 7 + 7)/8 = 70/8 = 8.750

c) Percentage of cordless telephones having excellent voice quality = 2/8 x 100 = 25%

d) Percentage of cordless telephones having handset on the base = 4/8 x 100 = 50%