Answer:
x = 3/7
Step-by-step explanation:
I think its 149/ 490. Not sure, but pretty confident. Hope this helps.
Answer:
21.1%
Step-by-step explanation:
(25 - 24.3) / 1.2 = 0.5833 z score = 78.9%
You need the percent that spend more than 25 hrs per week, so 100 - 78.9 = 21.1%