Uppose you want to estimate the proportion of traditional college students on your campus who own their own car. From research on other college campuses, you believe the proportion will be near 25%. What sample size is needed if you wish to be 95% confident that your estimate is within 0.02 of the true proportion?

1,269 students

Step-by-step explanation:

Z-score for a 90% confidence interval (z) = 1.645

The proportion of students who own their own car (p) = 0.25

Standard error = 0.02  

The standard error of a proportion is given by:

Applying the given values, the sample size 'n' needed is:

Rounding up to the next whole student, the sample size needed is 1,269 students.

45

step-by-step explanation: