It is 42 because 63 x 2/3 is 42.
Answer:
12
Step-by-step explanation:
5 : 6 = Number of boys to girls
(We have to ×2 to get from 5 to 10 so we must ×2 from 6 to 12)
10 : ? = Number of Boys to girls
10 : 12 = Number of Boys to girls
Answer:
if a z-score is equal to +1, it is 1 standard deviation above the mean.
Step-by-step explanation: