MATH SOLVE

4 months ago

Q:
# When 415 junior college students were surveyed, 150 said they have a passport. constructa 95% confidence interval for the proportion of junior college students that have apassport. round to the nearest thousandth?

Accepted Solution

A:

Solution:

The 95% confident interval will be estimated as follows:

sample proportion: 150/415=0.362

ME=1.96*[0.362*0.638/415]=0.0011

thus

95% CI

0.362-0.0011<p<0.362+0.0011

The 95% confident interval will be estimated as follows:

sample proportion: 150/415=0.362

ME=1.96*[0.362*0.638/415]=0.0011

thus

95% CI

0.362-0.0011<p<0.362+0.0011