I am slightly confused by your wording in the last sentence, but if you are trying to figure out how many children attended the concert you would use the second statement. The first statement does not tell you if the students are "children" are not so that is not an appropriate choice.<span />
If a normal random variable has mean of 0 and standard deviation of 1, it is called a standard normal distribution.
<h3>Normal Probability Distribution</h3>
The z-score of a measure X of a normally distributed variable with mean
and standard deviation
is given by:

- The z-score measures how many standard deviations the measure is above or below the mean.
- Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.
For the standard normal distribution, the mean and the standard deviation are given, respectively, by:

More can be learned about the normal distribution at brainly.com/question/24537145
#SPJ1
Answer:
4
Step-by-step explanation:
Constant of proportionality is given as, k = y/x
To find the constant of proportionality of the table of values given, use any of the given pairs of values, say, (1, 4).
Thus, k = 4/1 = 4
Constant of proportionality = 4
Answer:
4
Step-by-step explanation:
you need 4 halves to make 2 whole!