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.
3/5=12/x
reciprical of both sides
5/3=x/12
times twelve on both sides
x=20
<span>P - 3 1/6 = -2 1/2
3 1/6- 21/2
p=2/3 </span>
Answer: 6 pigs and 3 chickens
Step-by-step explanation: you know that each pig has 4 legs and each chicken has 2 legs so start out by saying 9 pigs and 0 chickens which is 36 legs then try 8 pigs and 1 chickens and 8 times 4 = 32 + 2 which is 32 which is more than 30 then notice for every chicken there is you subtract 2 from 36
knowing this we can divide 6 by 2 and get 3 the number of chickens
so 6 pigs and 3 chickens
hope this helps mark me brainliest if it helped
Answer:
6
Step-by-step explanation:
if one meal is 6 dollars you buy 2 meals that would be 12 dollars then u add 7 dollars worth of snacks to get 19
