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.
Answer:
D
Step-by-step explanation:
-2 = 3(-1) +1
-2 = -3 + 1
-2 = -2
Answer:
hcf is the answer questions and I will
9514 1404 393
Answer:
B
Step-by-step explanation:
The only answer choice shown that has a midline value of -2 is the second one. This is confirmed by a graphing calculator.
