6\12 is not equal to 1\12
Answer: 151
Step-by-step explanation:
if prior population proportion is unknown , then the formula is used to find the sample size :

, where
= Two tailed critical value for significance level of 
E = Margin of error.
Given : margin of error = 8%= .08
For 95% confidence level , two tailed critical value = 1.96
Now, the required sample size :

Hence, the size of the sample needed = 151.
the answer is gonna be a. 5m+40
Answer:
arrange it first in increasing order
42,55,69,74,78,83,83,97,99
n=9
we have
Q2=(n+1)/2th term=(9+1)/2th term=5thterm=78
Answer:
209.1 cm2
Step-by-step explanation:
the area of the circle around the rectangle is 113.1 cm2 and the area of the rectangle is 12x8=96cm and 113.1+96=209.1