Answer:
1 : 8
Step-by-step explanation:
Answer:
2_2 x3 cos x/2 + 1/ 2 4- x 2 dx
Answer:
6
Step-by-step explanation:
Given

Required
Solve

We start by converting the division sign to multiplication

Then, we divide -9 by 3
Then, we divide 8 by -4
Multiply -2 and -3 to give final result

Hence,
is equivalent to 6
Answer: a) Required minimum sample size= 219
b) Required minimum sample size= 271
Step-by-step explanation:
As per given , we have
Margin of error : E= 5% =0.05
Critical z-value for 90% confidence interval : 
a) Prior estimate of true proportion: p=28%=0.28
Formula to find the sample size :-

Required minimum sample size= 219
b) If no estimate of true proportion is given , then we assume p= 0.5
Formula to find the sample size :-

Required minimum sample size= 271