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 = x'10 − 10x'8 + 40x'6 − 80x'4 + 80x'2 − 32
Step-by-step explanation:
Answer: multiply the radius times 2 and then multiply the result by 3.14.
Step-by-step explanation:
Answer:
do you have a picture with the problem written out?