A community for students.
Here's the question you clicked on:
 0 viewing
nuccioreggie
 one year ago
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.
please EXPLAIN the ANSWER
nuccioreggie
 one year ago
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. please EXPLAIN the ANSWER

This Question is Closed

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yes 8hrs so ryan is correct

nuccioreggie
 one year ago
Best ResponseYou've already chosen the best response.0please explain in to senteces

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.0we have to compute the mean of both groups of data

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0There are 2 samples of 500 people each → that's 1000 people altogether who responded to the survey. Add up the total number for each response, so 60 + 70 = 130 people said they work 6 hours. Then 90 + 80 = 170 people said they worked 7 hours, and so on. The mean is each person's response divided by the total amount of responses. It would take too long to add up 6 hours 130 times, so we multiply 6*130 and do the same for each response. \[\frac{ 6(60+70)+7(90+80)+8(145+140)+9(150+145)+10(55+65) }{ 1000 }\]
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.