The results for a survey of 120 students who were selected randomly are listed below.
60 students have a cell phone plan with company x
• 36 students have a cell phone plan with company y
• 24 students do not have a cell phone
the total population of students was 380. based on the data, what is the best approximation for the total
number of students who have a cell phone plan with company y? company x? no cell phone?

Company X - 190 students

Company Y - 114 students

No phones - 76 students

Step-by-step explanation:

1) Find a multiplier to get the ratio from sample to population; to compare the sample to the population

380/120 = 3.16666667 or 3 & 1/6

380 comes from the total population of students and 120 comes from the randomly selected.

2) Use our multiplier to compare the results to the population

People with Company X

People with Company Y

People with no cell phone

Double check

190 + 114 + 76 = 380

2

step-by-step explanation:

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