Answer: 650
Step-by-step explanation:
When prior estimate of population proportion is known , then the formula to find the required sample size is given by :-

, where p= population proportion
E= margin of error
z* = Critical value.
Let p be the proportion of adults able to identify a Toyota Scion by brand and model name.
As per given , we have
p = 12%= 0.12
E= 2.5%=0.025
Critical value for 95% confidence interval : z* = 1.960 [By z-table ]
Then, the required sample size = 



Thus , the required sample size = 650
(2x-1)(2x-1)
(4x^2+2x+1)(2x-1)
(2x-1) cancels out so
2x-1
4^2+2x+1
Answer:
if your number is 1000 there should be one decimal at the end so it should be 1000. Because 1000. And 1000 are the same thing
Step-by-step explanation:
Answer:
The first image = y =8x^2 -1
The second image y =8x^2
Step-by-step explanation:
Answer:
10/12x100%= 83.3%
Step-by-step explanation: