If there are 29 students in class and they need to collect a total of 168, we can divide 168 by 29 to get $5.79. This means that each student must collect $5.79 in order for them to be able to purchase everything.
Solution: We are given:
![\mu=15, \sigma=5](https://tex.z-dn.net/?f=%5Cmu%3D15%2C%20%5Csigma%3D5)
Using the empirical rule, we have:
covers 68% of data.
Also the percentage of values below mean = Percentage of values above mean = 50%
Now, let's find the z score for x=20
![z=\frac{20-15}{5}=1](https://tex.z-dn.net/?f=z%3D%5Cfrac%7B20-15%7D%7B5%7D%3D1)
Therefore, the percentage of values greater than 1 standard deviation above mean ![50\% - \frac{68\%}{2} =50\%-34\%=16%](https://tex.z-dn.net/?f=50%5C%25%20-%20%5Cfrac%7B68%5C%25%7D%7B2%7D%20%3D50%5C%25-34%5C%25%3D16%25)
Expected number of students = 16% of 100 = 16
Answer:
C) 70%
Step-by-step explanation:
To find his percentage we take part over total
14/20
We want it over 100, so multiply the top and bottom by 5
14*5
---------
20*5
70/100
Percent means out of 100
so we have 70 percent
70 %
Answer:
138
Step-by-step explanation: