Step-by-step explanation:
y=-4x²
if <em><u>x=0</u></em> x=2
y=0 y=16
<em><u>x=</u></em><em><u>1</u></em> x=-2
y=4×1² <u>y=-16</u>
y=4
<em><u>x</u></em><em><u>=</u></em><em><u>-1</u></em>
y=-4
Find the variables. WORTH 50 POINTS
2 answers:
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Answer:
The desired z-score is 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.
n(12,2.5)
This means that
z score when x =17
This is Z when X = 17. So
The desired z-score is 2.