Answer:
And rounded up we have that n=31
Step-by-step explanation:
First we need to find the critical value for the margin of error desired. The confidence level is 0.95 so then the significance is
and the critical value for this case would be:
![z_{\alpha/2} =\pm 1.96](https://tex.z-dn.net/?f=%20z_%7B%5Calpha%2F2%7D%20%3D%5Cpm%201.96)
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=31
You would multiply the # of pounds (5) by the price ($1.99). So, 5 x 1.99 = $9.95.
15% of 38.75 is approximately 5.81.
A 15% tip would be $5.81.
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-6 + -7 = -13 consecutive means one after the other
Answer:
The answer is B.
Step-by-step explanation:
A function is a set of ordered pairs in which each x-element has only ONE y-element associated with it. While a function may NOT have two y-values assigned to the same x-value, it may have two x-values assigned to the same y-value. Function: each x-value has only ONE y-value!
Hope this helps :)