What is the range of this data set 22 30 49 71 85 88 92 97 99

the range is 77.

Step-by-step explanation:

the range is 77. you calculate range by subtracting the smallest number from the biggest number.

This is your  answer feel free do double check

the total estimated nappy use.=10,500,000

step-by-step explanation:

given that on an average the average baby uses 3528 napkins.

in a particular year 2014, the number of births were 299697 in new south wales.

rounding off the number of births to the nearest hundred thousand we have

no of birtsh = 300000

also rounding off the average usage to nearst thousand we get

average use of a baby = 3500

hence total number of nappy estimated to be used = 3500x300000

= 10,500,000

answer is 10,500,000 nappies