<span>First you need to find the mean on these numbers that is step one in finding standard deviation. so this is 44.2. now you need to subtract the mean from each number and square the result. after that step you now have these numbers.... 3.24, 139.24, .64, .4,.64,282.24,116.64,77.44,27.04. now the next step is to find the mean of these numbers. you get 71.9 appx.. now all you do is square root this number you get 8.5 when you round to the nearest thenth</span>
Answer:
Step-by-step explanation:
<u>The profit is the difference between the revenue and the total cost:</u>
<u>Substitute values:</u>
- P = 31.90N - (550 + 15.95N)
- P = 31.90N - 15.95N - 550
- P = 15.95N - 550
Answer:
Step-by-step explanation:
Given that the midterm exam in Econ 2201 consisting of 50 students was worth 100 points. The top 5 scores were 75, 81, 88, 92, and 94.
We have to find the 95th percentile of the score distribution.
For this purpose let us arrange in ascending order
75, 81, 88, 92, 94
We must have 95% below the value we find out so that it would be the 95th percentile
i.e. here 95% means = ![5*95/100 = 4.75](https://tex.z-dn.net/?f=5%2A95%2F100%20%3D%204.75)
4.75 entries should be below that entry
We see that 80% entries are below 92 and 100% below 95
To find 95%
For 20 % difference differnce in score = 94-92 =2
Hence for 15% difference difference in score = ![2(\frac{15}{20} )=1.5](https://tex.z-dn.net/?f=2%28%5Cfrac%7B15%7D%7B20%7D%20%29%3D1.5)
95th percentile= 92+1.5 = 93.5