Answer:
n= -3
Step-by-step explanation:
Step 1: Simplify both sides of the equation.
4n+2=6(
1
3
n−
2
3
)
4n+2=(6)(
1
3
n)+(6)(
−2
3
)(Distribute)
4n+2=2n+−4
4n+2=2n−4
Step 2: Subtract 2n from both sides.
4n+2−2n=2n−4−2n
2n+2=−4
Step 3: Subtract 2 from both sides.
2n+2−2=−4−2
2n=−6
Step 4: Divide both sides by 2.
2n
2
=
−6
2
n=−3
Answer:
We need to sample at least 37 weeks of data.
Step-by-step explanation:
We have that to find our
level, that is the subtraction of 1 by the confidence interval divided by 2. So:

Now, we have to find z in the Ztable as such z has a pvalue of
.
So it is z with a pvalue of
, so 
Now, find the margin of error M as such

We want 98% confidence that the sample mean is within $500 of the population mean, and the population standard deviation is known to be $1300
This is at least n weeks, in which n is found when 
So






Rounding up
We need to sample at least 37 weeks of data.
I have the same question on a test I'm taking thanks