Can someone help me with this question? It's about mean. It is due 11:59 EST.

Question

A sample of 36 customers was taken at a computer store. Each customer was asked the price of the computer she bought. Here is a summary. Find the mean round to the nearest dollar

number of computers / price paid for each

14 / 1400

19 / 1800

3 / 1000

Answer 1

Lets look at this problem. There are a total of 36 customers so we must have 36 guesses for the cost of the computer. To find the mean (the average) we must add up the total of all the guesses and divide the total by 36. The numbers used for the problem comes from the given frequency table.

We have 14 people who said the computer is $1,400. We have 19 people who said the computer is $1,800, and we have 3 people who said that the computer is $1,000. There is an easy or a hard way to do this problem. We can keep adding $1,400 (14 times) and $1,800 (19 times) etc., or we can remember that multiplication is just repeated addition.

The equation for the mean is:

mean = 14 x 1400 + 19 x 1800 + 3 x 1000

36

The mean is $1,577.77.....

The nearest dollar is $1,578

Answer 2

To find the mean, add all the computer prices together, then divide by the number of computers:

mean = sum of all the comp. prices = (14 x $1400) + (19 x $1800) + (3 x $1000) = $56,800 = $1,578

number of computers 36 computers 36 rounded to

the nearest

dollar

Answer 3

mean = ((1400)14 +19(1800) + 3(1000))/(14+19+3)

= (19600 + 34200+3000)/36

= 56800/36

= 1577 7/9

= $1,578 rounded to nearest dollar