Answer:
And rounded up we have that n=385
Step-by-step explanation:
In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 95% of confidence, our significance level would be given by 
and 
. And the critical value would be given by:
The margin of error for the proportion interval is given by this formula:
(a)
And on this case we have that 
and we are interested in order to find the value of n, if we solve n from equation (a) we got:
(b)
The estimated proportion for this case is 
. And replacing into equation (b) the values from part a we got:
And rounded up we have that n=385
Using the distributive property, we can simplify 3(5-3) to 15-9, which is 6. Doing 6+53 gets us the answer 59.
EDIT: I hadn't noticed that it was 5^3, so in this case, the answer is 131.
:)
Answer:
18/20
Step-by-step explanation:
There are 20 cards in total. The 9 yellow and brown cards makes 18 cards. Since we want the yellow or brown, the probability is 18 out of 20 cards.
The slope interception is going to be y=15
Hello,
y= x^3-4x²-3x+18=(x-3)²*(x+2)
y'=3x²-8x-3
y''=6x-8
1) Stationary points
Maximun: x=-1/3 ==>y=18,5185....
Minimum: x=3 ===>y=0 (double root)
2) x=4/3: point of inflection. (y''=0 and change sign)
