Step-by-step explanation:
The plumber's daily earnings have a mean of $145 per day with a standard deviation of
$16.50.
We want to find the probability that the plumber earns between $135 and
$175 on a given day, if the daily earnings follow a normal distribution.
That is we want to find P(135 <X<175).
Let us convert to z-scores using

This means that:

We simplify to get:

From the standard n normal distribution table,
P(z<1.82)=0.9656
P(z<-0.61)=0.2709
To find the area between the two z-scores, we subtract to obtain:
P(-0.61<z<1.82)=0.9656-0.2709=0.6947
This means that:

The correct choice is C.
Answer D because you want to get the x by itself and in order to do this she needs to multiply by -4 so that one side only has x.
Answer:
you didnt show the picture
Step-by-step explanation:
we know that
the algebraic expression is equal to

therefore
<u>the answer is</u>

Answer:
It should be C
Step-by-step explanation:
I hope this helps