Answer:
The score that cuts off the bottom 2.5% is 48.93.
Step-by-step explanation:
When the distribution is normal, we use 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 question, we have that:

What is the score that cuts off the bottom 2.5%
This is X when Z has a pvalue of 0.025, so X when Z = -1.96.




The score that cuts off the bottom 2.5% is 48.93.
Answer:
x = 8
Step-by-step explanation:
→ Add 16 to both sides
x = 8
Answer:
X=3
Step-by-step explanation:
What you have to do is minus 2 from 11 and you get 9
Now divide 3 into 9 and you get 3
x=3 you can also plug 3 for x to see if the equation is right
You just multiple my guy. 2:3 is like 2/3. What is 2/3 of 39
39*2/3 = 26