When 319 college students are randomly selected and surveyed , it is found that 120 own a car . find a 99% confidence interval for the true proportion of all college students who own a car.

a.0. b.0. c.0. d.0.332< 0.421

Step-by-step explanation:

The confidence interval for a population proportion is calculated using the formula;

In the above expression;

p represents the sample proportion calculated as, number of successes/sample size;

p = 120/319 = 0.3762

z represents the confidence coefficient associated with the given level of significance. In our case the confidence level required is 99%. The z-score associated with this level of significance is +/-2.576

n represents the sample size under evaluation,  319 college students.

Using the values obtained above, the 99% confidence interval for the true proportion of all college students who own a car is;

$18 was the price of the t-shirt

step-by-step explanation:

g = (2, 2)

step-by-step explanation:

given the ratio is 1 : 1 then f is the midpoint of eg

let the coordinates of g = (x, y)

using the midpoint formula

(0 + x) = 1 ( multiply both sides by 2 )

0 + x = 2 ⇒ x = 2

similarly

(4 + y) = 3 ( multiply both sides by 2 )

4 + y = 6 ( subtract 4 from both sides )

y = 2

coordinates of g = (2, 2)