Saturday

September 20, 2014

September 20, 2014

Posted by **jim** on Saturday, April 20, 2013 at 12:10pm.

- statistics -
**MathGuru**, Monday, April 22, 2013 at 5:35pmYou will need a confidence interval formula for the difference of two population proportions.

Here is one such formula:

CI95 = (p1-p2) ± 1.96 [√(p1q1/n1 + p2q2/n2)]

Your data:

p1 = .62

q1 = 1 - p1 = .38

p2 = .24

q2 = 1 - p2 = .76

n1 = 150

n2 = 200

Substitute your data into the formula and calculate the confidence interval.

**Answer this Question**

**Related Questions**

statistics - A new medication has been created to treat osteo-arthritis ...

math - Three men and three women are waiting to be interviewed for jobs. If they...

math - Three men and three women are waiting to be interviewed for jobs. If they...

gr12 math - froma group of 6 ladies and 4 men, determine in how many ways a ...

math - from a group of women and 4 men, determine in how many ways a committee ...

Statistics - A random sample of 250 men yielded 175 who said they'd ridden a ...

statistics - A random sample of 250 men yielded 175 who said they'd ridden a ...

statistics - Suppose that a department contains 8 men and 20 women. How many ...

statistics - In a survey of families in which both parents work, one of the ...

math statistics - In a survey of families in which both parents work, one of the...