Step 1 of 2 : Suppose a sample of 879 new car buyers is drawn. Of those sampled, 210 preferred foreign over domestic cars. Using the data, estimate the proportion of new car buyers who prefer foreign cars. Enter your answer as a fraction or a decimal number rounded to three decimal places.

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Ответ:

bnnn

29.01.2022

Mathematics

Part a:

f(x) = 1264 (1.09)^2

f(x) = ao (1 + r)^n

r = 0.09

per year: 9

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

n=1

part b: f(x) = ao (1 + r)^n

1375 = ao (1 + r)^1

ao = 1375 / (1 + r)

n = 2

1512.50 = ao (1 + r)^2

ao = 1512.50 / (1 + r)^2

$1375 / (1 + r) = 1512.50 / (1 + r)^2 1375 (1 + r)^2 = 1512.50 (1 + r) 1375 (1 + r) = 1512.50 1 + r = 1.1 r = 0.10$

b account has 10%

a account has 9%

so out of those two b is greater

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