Answer:
exponent i think.
Step-by-step explanation:
Answer: 16590
Step-by-step explanation:
The formula we use to find the sample size is given by :-
, where p = prior estimate of population proportion.
= Critical z-value (Two- tailed)
E= Margin of error .
Let p be the population proportion of cyanobacteria.
Given : E = 0.01
Critical value for 99% confidence interval : 
If Ian does not want to rely on previous knowledge , then we assume p=0.5 because the largest standard error is at p=0.5.
Now, the required sample size = 

Required sample size = 16590
Answer: ok the answer is 42
Step-by-step explanation: so q = 17 right? and 25 = Y
so i think you add then you get 42...right? i might not get the right answer
but what letter is this i don't know this symbol or lettter: π
Y= -2+4
If X equals -2, you want to plug -2 in for X.
I hope I helped!
:)