Answer:
D
Step-by-step explanation:
Has the correct y-axis and has the graph going the correct way for both functions.
Answer:
42.25
Step-by-step explanation:
65*35%=22.75
65-22.75=42.25
Given:
μ = $3120, population mean
σ = $677, population standard deviation.
The population is normally distributed.
n = 20, sample size.
At the 95% confidence level, the confidence interval is

1.96(σ/√n) = 1.96(677/√20) = 296.71
Th confidence interval for the mean is
($2823.29, $3416.71)
Answer: ($2823.29, $3416.71)