Question

In a random sample of 80 people, 36 consider themselves as baseball fans. Compute a 92% confidence interval for the true proportion of people consider themselves as baseball fans and fill in the blanks appropriately.

We are ____% confidence that the true proportion of people consider themselves as baseball fans is between ____ and ____ . (Keep 3 decimal places)

Answer 1

Using TI 84 calculator

STAT --> Tests --> 1-PropZtest

set the following values

x: 36

n : 80

C-level: 0.92

Press Calculate button, this gives us

92% confidence interval = (0.353,0.547)

We are __92__% confidence that the true proportion of people consider themselves as baseball fans is between 0.353 and 0.547