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Answered

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A survey asked a random sample students if they estimated they spent more
or less than an hour a day on social media. Results are shown in the table
below, but some values are missing. Fill in the missing values.

A Survey Asked A Random Sample Students If They Estimated They Spent More Or Less Than An Hour A Day On Social Media Results Are Shown In The Table Below But So class=

Sagot :

dasanihickman07

Answer:

25  ,   15   ,  total =  40

20  ,   25  ,   total = 45

45  ,   41   ,   total =  75

PLZZZ MARK BRAINLY CUZ

Step-by-step explanation:

7th grade- 15 , 15 , 30

8th grade- 19 , 26 , 45

Total- 34 , 41 , 75

     

How to find the missing values?

  • In the given table, we can see the total is 75 comprising of all 7th and 8th grade
  • Total of 8th grade is 45

∴ Total of 7th grade students = (75-45) = 30

  • In 7th grade, the total is 40, that comprises students spending both more or less than one hour a day on social media.

∴ Students spending more than one hour in 7th grade = (30-15) = 15

  • Again, total students spending less than one hour in social media comprising of both 7th and 8th grade is 41

∴ total students spending less than one hour in social media in 8th grade is ( 41 - 15) = 26

  • Again, total number of 8th grade students is 45

∴ total students spending more than one hour in social media in 8th grade is (45 - 26)= 19

∴ Total number of students spending more than an hour in social media comprising of 7th and 8th grade is ( 15+19) = 34

Find out more about 'Survey Questions' here: https://brainly.com/question/2873309

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