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
Answer:
Step-by-step explanation:
40/6=6.66666667
Yes because the fee will be $2×5(Days)=10 so she can still check out books but she can't have anymore late
Answer:
1 is answer
Step-by-step explanation:
2*3/5*3___6/5