Answer:
Probability that the sample mean score is less than 522 = 0.0166 .
Step-by-step explanation:
We are given that in 2010 the mean mathematics SAT score was 555, and the standard deviation was 125 i.e.;
Mean, = 555 and Standard deviation, = 125
Also, Z = ~ N(0,1) where, X bar = sample mean
n = sample size
Now, Probability(X bar < 522) = P( < ) = P(Z < -2.1284)
= P(Z > 2.1284) = 0.0166
The above probability is calculated using z table.
Therefore, the probability that the sample mean score is less than 522 is 0.0166 .
Answer:
Each kid will get 1.8 slices.
Step-by-step explanation:
If there are 18 slices, and there are 10 people, and everyone gets an equal amount, then you divide 18 by 10. This will result in 1.8.
Therefore, your answer is that each kid gets 1.8 slices of cake.