Question

medal
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. Make sure to use facts to support your answer.

Answer 1

@Qwertty123 @Wolfboy @TheSmartOne @inkyvoyd @Opcode @princesssleelee @aaronq @adrynicoleb @Aveline @Awolflover1 @sleepyjess @sweetburger @jabez177 @Jack_Prism @KendrickLamar2014 @Vocaloid @BruhObamaCare @marcelie

Answer 2

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

Answer 3

6(60) + 7(90) + 8(145) + 9(150) + 10(55) = 4050/500 , so the mean of Sample A is 4050/500

Answer 4

And 6(70)+7(80)+8(140)+9(145)+10(65) = 4055/500 , so the mean of Sample B is 4055/500

Answer 5

And the mean of both means is 8.1

Answer 6

thanks! @BruhObamaCare how should i put that into a few short sentences?

Answer 7

Please just get the first sentence started at least lol I don't know what to say ):)

Answer 8

@BruhObamaCare

Answer 9

Mean of Sample A is 4050/500
Mean of Sample B is 4055/500
Mean of both means is 8.1

Answer 10

thanks so much!

Answer 11

No problem :D Glad I could help