Answer:
A person must get an IQ score of at least 138.885 to qualify.
Step-by-step explanation:
Problems of normally distributed samples are solved using the z-score formula.
In a set with mean
and standard deviation
, the zscore 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 pvalue, we get the probability that the value of the measure is greater than X.
In this problem, we have that:

(a). [7pts] What IQ score must a person get to qualify
Top 8%, so at least the 100-8 = 92th percentile.
Scores of X and higher, in which X is found when Z has a pvalue of 0.92. So X when Z = 1.405.




A person must get an IQ score of at least 138.885 to qualify.
Answer:
(a): x-intercept: -4
(b): y-intercept: -1
Step-by-step explanation:
Answer:
and
.
Step-by-step explanation:
To this relation be a function, the horizontal coordinates can't be equal. So, let's find the value of
that makes those coordinates equal.

Using the null factor property, we have

Therefore, the given relation is not a function when
and
.
Answer:
Evan is correct
Step-by-step explanation:
To find this answer, we can use the formula A=PxW
A=Part, P=Percentage, W=Whole
We can fill in the numbers we know and leave blank (with the variable) the numbers we want to find out
In this scenario, we want to find out if 25 is 125% of 29
So we can use this formula and do the equation like this:
A=1.25x20
This gets us to 25
So Evan is correct!
Hope this helps and please award brainliest if possible!