Answer:
Claim is false
Step-by-step explanation:
Claim : A credit reporting agency claims that the mean credit card debt in a town is greater than $3500.

n = 20
Since n <30
So we will use t test
Formula : 
s = standard deviation = 391
x = 3600
n = 20


Degree of freedom = n-1 = 20-1 = 19
α=0.10
So, using t table
= 1.72
t critical > t calculated
So we accept the null hypothesis
Hence we reject the claim that the mean credit card debt in a town is greater than $3500.
Answer:
-5
Step-by-step explanation:
Cuz it lines up to -5 on x-axis
Answer:
Determine the response factor ( F ) = 0.146
Step-by-step explanation:
Recalling from Response factor;
- where Ax = peak area of analyzed (DDT) = 3713
- As = peak area of standard = 10899
- Cx = concentration of analyzed = 6.58 mg/L
- Cs = concentration of standard chloroform = 2.82 mg/L
- From the equation; F = Ax/As x Cs/Cx
This fraction 38/45 stays the same. Because the top number is smaller than the bottom number