Answer:
A. 2.5 standard deviations below the average salary.
Step-by-step explanation:
In a normally distributed sample, the z-score measure how many standard deviations a measure is above or below the mean.
If the zscore is positive, the measure is above the mean.
If it is negative, the measure is below the mean.
A quality control specialist calculated thez-score associated with his own salary and found it was minus2.50. What is his salary?
This means that his salary is 2.5 standard deviations below the mean, that is the average salary.
The correct answer is A.
For this question you can just divide the both sides by -7 so you gonna have :
-7b/-7 = -42/-7 ⇒ b = 6 :)))
i hope this is helpful
have a nice day
It is C because 4 pi r^2 is the surface area equation. 4 times 6 squared= 144. 144pi = surface area.
The possible outcomes of the first part are (QQ,NN,QN,NQ) so there are 4 outcomes.
For the second one 5/8 the the probabliity
Answer:
0.76=x
Step-by-step explanation:
to solve this you want to get x by itself on one side.
0.75x+4=6x
we'll move 0.75x over to the other side.
0.75x-0.75x+4=6x-0.75x
now we simplify.
4=5.25x
now we divide both sides by 5.25x.
4/5.25=5.25x/5.25
≈0.76=x
