Answer:
The z-score for the trainee is of 2.
Step-by-step explanation:
Normal Probability Distribution
Problems of normal distributions can be solved using the z-score formula.
In a set with mean
and standard deviation
, the z-score of a measure X is given by:

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.
The mean of the test scores is 72 with a standard deviation of 5.
This means that 
Find the z-score for a trainee, given a score of 82.
This is Z when X = 82. So



The z-score for the trainee is of 2.
The answer is 2.6, 2 is whole number so it is put first and the fraction

if you add them together you get the answer of
Answer:
15
Step-by-step explanation:
Y= 32+33x where y is the amount charged and x is the time in hours
197=32+33x
165=33x
5=x
Final answer: 5 hrs
Answer:
Step-by-step explanation:
