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:
I got 1.885 for the answer.
Maybe they wanted it rounded to just 2 decimal places.
Step-by-step explanation:
Answer:
y-5=4(x+3)
Step-by-step explanation:
y-y1=m(x-x1)
y-5=4(x-(-3))
y-5=4(x+3)
D. 50 mph
Going upstream takes longer because of the flow of the water
from what I got, it would be −14k − 2
