You are interested in purchasing a new car. one of the many points you wish to consider is the resale value of the car after 5 years. since you are particularly interested in a certain foreign sedan, you decide to estimate the resale value of this car with a 99% confidence interval. you manage to obtain data on 17 recently resold 5-year-old foreign sedans of the same model. these 17 cars were resold at an average price of $ 12 , 290 with a standard deviation of $ 700. what is the 99% confidence interval for the true mean resale value of a 5-year-old car of this model?

the answer is:

mean: 6

mad: 2.14

(a) {a₁, a₁r, a₁r², … a₁rⁿ⁻¹, …}

(b) $59 398

step-by-step explanation:

(a) the annual sequence of profits

aₙ = a₁rⁿ⁻¹

the model for the sequence of profits is {a₁, a₁r, a₁r², … a₁rⁿ⁻¹, …} .

(b) profit after 15 yr

  a₁ = $ 30 000

  r = 1.05

a₁₅ = 30 000 × 1.05¹⁴

a₁₅ = 30 000 × 1.979 93

a₁₅ = $59 398

the profit in year 15 will be $59 398.

тнєу єα¢н яαи 32 мιℓєѕ

step-by-step explanation:

нσρє ι ¢συℓ∂ нєℓρ уσυ συт тσ∂α!

given the equation is 8+9z=-6, the first step would be to subtract the 8 from both sides:

8+9z-8=-6-8

since 8 minus 8 = 0, this would cancel out the 8. and since -6 minus 8 equals -14, the equation would look like this

9z = -14