The answer is c hope this helps
Answer: 40000
Step-by-step explanation:
The formula to find the sample size is given by :-
, where p is the prior estimate of the population proportion.
Here we can see that the sample size is inversely proportion withe square of margin of error.
i.e. ![n\ \alpha\ \dfrac{1}{E^2}](https://tex.z-dn.net/?f=n%5C%20%5Calpha%5C%20%5Cdfrac%7B1%7D%7BE%5E2%7D)
By the equation inverse variation, we have
![n_1E_1^2=n_2E_2^2](https://tex.z-dn.net/?f=n_1E_1%5E2%3Dn_2E_2%5E2)
Given :
![n_1=1000](https://tex.z-dn.net/?f=n_1%3D1000)
![E_2=0.025](https://tex.z-dn.net/?f=E_2%3D0.025)
Then, we have
![(1000)(0.05)^2=n_2(0.025)^2\\\\\Rightarrow\ 2.5=0.000625n_2\\\\\Rightarrow\ n_2=\dfrac{2.5}{0.000625}=4000](https://tex.z-dn.net/?f=%281000%29%280.05%29%5E2%3Dn_2%280.025%29%5E2%5C%5C%5C%5C%5CRightarrow%5C%202.5%3D0.000625n_2%5C%5C%5C%5C%5CRightarrow%5C%20n_2%3D%5Cdfrac%7B2.5%7D%7B0.000625%7D%3D4000)
Hence, the sample size will now have to be 4000.
Answer:
C OR D
Step-by-step explanation:HOPE IT HELPSS!!!
Since the radius is the same but the height changes, the volume would change by the multiple of the height.
In this case the volume of the larger cone would be 4 times as large as the smaller cone so you would need 4 small cones
Answer:
Answer: 12%
Step-by-step explanation:
To find the probability of picking not only a sphere but one that is blue as well, you need to multiply the probabilities of both events because this would show the probability of getting the second event if the first is gotten:
= Probability of sphere * Probability that sphere is blue
= 40% * 30%
= 12%
Step-by-step explanation: i think im right