Answer:
8
Step-by-step explanation:
I think it is 8 because I did the equation Q3=3/4(12) and I got 9 which means the answer is 8 which is the 9th number
Answer: 2017
Step-by-step explanation:
Given : The proportion of people that smoke : p=0.3
Margin of error : E= 0.02
Significance level :
Critical value : 
The formula to calculate sample size ( if proportion is known) :-

Hence, the required minimum sample would be 2017.
Answer:
-1
Step-by-step explanation:
the slope of this one is y=x-21
in order for it to be perpendicular the sign changes and the slope flips
but because the slope is 1 you just change the slope to -1
3/4=x/60 so you divide 60 by 4 and get 15x3=45/60
Answer: I believe it is 1.1x10^-8
Step-by-step explanation:
Because 3.4x10^2 divided by 3x10^10 gives you 0.00000011 which is then converted through scientific notation into 1.1 x10^-8