The following two-way frequency table shows information collected from a survey of students regarding their grade level and how they spend their screen time.
Grade vs. Uses the Watches Plays Video
Total
Screen Time Internet TV Games
7th Grader 6
3
6
15
8th Grader 8
3
2 13
Total 14
6
8
28
What is the probability that a student uses the Internet, given that he or she is in eighth
grade?
Enter your answer rounded to two decimal places, like this: 0.42

0.62

Step-by-step explanation:

In the picture attached, the table is shown.

We want to find the probability that a student uses the Internet, given that he or she is in eighth  grade. Mathematically:

P(Internet | eighth  grade) = P(Internet ∩ eighth  grade)/P(eighth  grade)

P(Internet | eighth  grade) = (8/28)/(13/28) = 8/13 = 0.62

step-by-step explanation:

the first 5 right here the next 5 i will upload as separate question

-362

step-by-step explanation:

(12)(4)+2(12)-34(12)+2(12)-3

  \/         \/         \/         \/

  48 +   24 -   408 + 24 - 3

      \   /               \   /

          72     -     432 - 3 = -363