Answer: a) 1267
b) 1509
Step-by-step explanation:
As per given , we have
Significance level : 
Using the z-value table , the critical z value for 98% confidence : 
Margin of error : E= 0.03
Formula for sample size :
, where p is the prior estimate of population proportion.
a) p=0.70
Sample size : 
Simplify , we get
Hence, the minimum sample size required = 1267
a) if no estimate of prior population proportion is given , we take p= 0.5
Sample size : 
Simplify , we get
Hence, the minimum sample size required = 1509
1) you have to find the difference between pipe A and pipe B, which is 6.40.
23.55-17.15=6.40
2) after finding the difference. You will take that difference and put it out of 23.55 and multiply by 100 to get your percentage. As so:
(6.40/23.55)(100)= 27.176% which rounds to 27% as a whole number.
Your answer is 27%. Hope that helps!
Well you just say 35 divided by 7 and you get 5
Cause 5 times 7 is 35
Answer:
n=7
Step-by-step explanation:
(7^2)^4= n^8
We know that a^b^c = a^(b*c)
7^(2*4) = n^8
7^8 = n^8
Since the exponents are the same, the bases must be the same
n=7
