Test: Exam #3 BUSA 2100 A Fal17 This Question: 3 pts 012823 Submit Test Suppose

Question

Test: Exam #3 BUSA 2100 A Fal17 This Question: 3 pts 012823 Submit Test Suppose you want to estimate the proportion of tradtional college statents on your campus who own their own car F samplesze is needed if you wish, to be 90% content that your estimate is within 0 02 ofthe tue poportm? This Test: 67 pts possible Click on the scon to view a table of the crtical values for common contidence leves From research on other colege campuses, you eleve the oponan wd be near Round up to the nearest whole number ) 30% what °Type here to e B

Explanation / Answer

Margin of error ME = 0.02/2 = 0.01

z for 90% = 1.645

p^ = 0.3 => 1 - p^ = 1 - 0.3 = 0.7

ME = z (p(1-p)/n) = 0.01

=> 1.645 * (0.3 * 0.7 / n) = 0.01

=> n = 1.6452 * 0.3 * 0.7 / 0.012

=> n = 5682.6525

The nearest integer is 5683.

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