If you spend $448.37 on a car each month, what is your new subtotal of take-home pay after expenses? $480.29 $629.75 $779.21 $928.66

629.75

(0.01, 3.19)

Step-by-step explanation:

Given that :

Mean (m) = 1.6 million

Standard deviation (s) = 2.5 million

α = 0.05

Sample size (n) = 12

Confidence interval :

m ± t(α, df = n - 1) * standard error

Standard Error = s/√n = 2.5 / √12 = 0.7216878

t0.05,11 = 2.200985 (t value calculator)

Hence,

1.6 ± 2.200985(0.7216878)

Lower bound /

1.6 - 2.200985(0.7216878) = 0.011575977517

Upper bound:

1.6 + 2.200985(0.7216878) = 3.188424022483

(0.01, 3.19)