He ate 8/15 of a pound of the cookies.
If we are looking for 4/5 of something, we just multiply the amount by 4/5.
To multiply fractions, just multiply straight across.
2 x 4 = 8 in the numerator
3 x 5 = 15 in the denominator
I suppose the answer would be 40 but I’m not sure
Answer:
z-score
Step-by-step explanation:
Since we are given the mean and standard deviation of a national test (whole population) it is fair to assume a large population size, and the use of the z-score would be more appropriate, since the z-score is used for the standardization of population data, while the t-score is recommended for samples or small populations.