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.
44.
1. Given
2. Vertical angles are congruent
3. angle 1 congruent to angle 5
4. Def congruence
3(5-2)
3x3 = 9
the answer is 9
0.7t^9 I just took the test and that is the right ansswer
