The empirical rule states that in a normal distribution,
68% of data is within 1 std deviation of the mean
95% of data is within 2 std deviation of the mean
99.7% of data is within 3 std deviation of the mean
In this case 95% of the cases would be within two std deviations of the mean
mean - 8 and mean + 8
72 - 8 = 64 and 72 + 8 = 80
then 95% of the scores are between 64% and 80% on the test.
10%
200 x x%=20
x=10%
Do u understand ?
Answer:
There is not another decimal equivalent to this but thre is fractions which your would be, 1/2 2/4
6:10 or 3:5 I believe
Hope this helps!
Answer:
a
Step-by-step explanation:
