Question

HELP MEDAL+FAN

Below are the data collected from two random samples of 500 American adults on the number of hours they work per day (rounded to the nearest hour):


Number of hours of work per day 6 7 8 9 10
Sample A: Number of adults 60 90 145 150 55
Sample B: Number of adults 70 80 140 145 65


Ryan concludes that adults spend a mean of 8 hours working each day. Malia thinks the mean is 9 hours. Who is correct—Ryan or Malia? Explain your answer in two or three sentences.

Answer 1

Number of hours of work per day 6 7 8 9 10
Sample A: Number of adults 60 90 145 150 55
Sample B: Number of adults 70 80 140 145 65

Answer 2

thanks you for coming

Answer 3

what are your thoughts?

Answer 4

I don't know what to use to determine the answer

Answer 5

mean?

Answer 6

well, tell me your definition or concept of a mean ..

Answer 7

mean is the average of a set of number, right?

Answer 8

yes, what is the most basic way we calculate it

Answer 9

But both sample a and b are a get an average of 100. Am i Wrong

Answer 10

the sum of sample and be get 500

Answer 11

then divide by 5 you get 100

Answer 12

the average number of hours worked

out of 500 people in a sample:

6(60), 7(90), 8(145), 9(150), 10(55)

the total number of hours are defined as the sum of the terms

Answer 13

what is:

6(60) + 7(90) + 8(145) + 9(150) + 10(55)

Answer 14

uh 4050 :/

Answer 15

so 4050/500 is the mean of sample A

what is: 6(70)+7(80)+8(140)+9(145)+10(65)

Answer 16

do you see what im doing with it?

Answer 17

yes

Answer 18

4055 right ?

Answer 19

yep

the mean of sample B is 4055/500

the mean of the means is also going to be about 8.1

I cant verify this as correct, but i know who id go with

Answer 20

ok thank you so much

Answer 21

yw