I think I'll be 6/13= 0.4615
Answer:
Yes
Step-by-step explanation:
10:12 and 30:36
you can simplify them first so
10:12=5:6
and
30:36=5:6 which is equivalent to the other ratio
or you can do
10:12
10 times 3 is 30 30:36 12 times 3 is 36
Answer:
And rounded up we have that n=19112
Step-by-step explanation:
Previous concepts
A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".
The margin of error is the range of values below and above the sample statistic in a confidence interval.
Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".
Solution to the problem
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)
And replacing into equation (b) the values from part a we got:
And rounded up we have that n=19112
Answer:
First account= 2500
Second account= 4000
Step-by-step explanation:
Total amount invested: 6500
Amount in first account: x
Amount in second account: y
x+y=6500
1.13x+0.9y=6500-75=6425
You have two equation now just solve the system of equation through either substitution or elimination.
Then you'll get the answer
x= 2500
y= 4000
<h2>7.3333... is the correct answer</h2><h2></h2><h3>22 ÷ 3 = 7.3333...</h3><h3></h3><h3><em>Please let me know if I am wrong.</em></h3>