There are 16 outcomes. You’d multiply the number of coins there are (4) by itself (4) and get 16.
Answer:
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Answer:
x=44
Step-by-step explanation:
Making the equation in terms of x:
0.2x + 0.8 = 9.6
-0.8 -0.8
0.2x=8.8
*5 *5
x=44
Solution: We are given:

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

Therefore, the percentage of values greater than 1 standard deviation above mean 
Expected number of students = 16% of 100 = 16