$67.82 if you pay it on time.
$90.43 if you pay it late.
z = -2.83
<u>Explanation:</u>
Given:
Mean, μ = 68
Standard deviation, σ = 6
Data point, x = 51
Z score, z = ?
We know:
![z = \frac{data point - mean}{standard deviation} \\\\z = \frac{x - u}{p}](https://tex.z-dn.net/?f=z%20%3D%20%5Cfrac%7Bdata%20point%20-%20mean%7D%7Bstandard%20deviation%7D%20%5C%5C%5C%5Cz%20%3D%20%5Cfrac%7Bx%20-%20u%7D%7Bp%7D)
Substituting the value we get:
![z = \frac{51-68}{6} \\\\z = -2.83](https://tex.z-dn.net/?f=z%20%3D%20%5Cfrac%7B51-68%7D%7B6%7D%20%5C%5C%5C%5Cz%20%3D%20-2.83)
A negative z score says that the data point is below average.
Answer:
it is 4,000
Step-by-step explanation:
since you are rounding it to the nearest thousand, you loo at the 4, and the 2, the 2 is blow five, so it doesn't change the thousands place, but everything else becomes a 0