The formula for the confidence interval is given by
Sample mean + z*[σ/√n], and
Sample mean - z*[σ/√n]
We have:
Sample mean = 23.95
n = 40
σ = 2.55
z* for 99% confidence = 2.58
Substitute these values into the formula, we have
23.95 + (2.58)(2.55÷√40) = 24.99
23.95 - (2.58)(2.55÷√40) = 22.91
So the lower interval is 22.91 and the highest interval is 24.99
1. the answer is b = 30 .... you first simply both sides of the equation then flip it then multiply both sides by 10/13
2. the answer is g = 3/2 ...... multiply both sides by 5/2
C causw it is used to be a difrent cuase it just is
The constant of proportionality is $1.5 per jar of sauce. Hope it help!