Answer:
$12500
Step-by-step explanation:
use si formula
SI=ptr/100
si=5000
t=10
r=4
ANSWER 8-4 5-1 6-2
Step-by-step explanation:
I think the answer is (7x-3)(7x+3)
Answer:
So the answer for this case would be n=247 rounded up to the nearest integer
Step-by-step explanation:
We know that the standard deviation is :
represent the deviation
The margin of error is given by this formula:
(a)
And on this case we have that ME =25 and we are interested in order to find the value of n, if we solve n from equation (a) we got:
(b)
The critical value for 95% of confidence interval now can be founded using the normal distribution and the critical value would be
, replacing into formula (b) we got:
So the answer for this case would be n=247 rounded up to the nearest integer