Posted by **Anonymous** on Monday, May 7, 2012 at 10:44am.

In a random sample of 112 State College students, 41 students reported being current smokers.

a) Calculate the 95% confidence interval for the proportion of State College students who smoke.

- statistics -
**MathGuru**, Monday, May 7, 2012 at 11:11am
Use a confidence interval formula for proportions. Here is one:

CI95 = p ± (1.96)(√pq/n)

...where p = x/n, q = 1 - p, and n = sample size.

Hint: x = 41, n = 112

(Convert all fractions to decimals.)

I hope this will help get you started.

## Answer This Question

## Related Questions

- statistics - In a random sample of 112 State College students, 41 students ...
- Statistics - From random sample of 200 college students, 40 students indicated ...
- Math-Statistics - A marketing research company needs to estimate which of two ...
- Statistics - You want to know if there's a difference between the proportions ...
- Statistics - What percentage of college students are attending a college in the ...
- Statistics - A high school counselor is interested in the percentage of students...
- Statistics - You want to know if there's a difference between the proportions ...
- Statistics - Are you annoyed with spam e-mail? Suppose a random sample of 200 ...
- Statistics Math - 1. What type of car is more popular among college students, ...
- Statistics - A confidence interval was used to estimate the proportion of ...

More Related Questions