In a random sample of 97 women at a company, the mean salary is $45,902 with a standard deviation of $3865. In a random sample of 75 men at the company, the mean salary is $48,454 with a standard deviation of $6677. Construct a 95% confidence interval for the difference between the mean salaries of all women and men at the company.
@directrix

Question

In a random sample of 97 women at a company, the mean salary is $45,902 with a standard deviation of $3865. In a random sample of 75 men at the company, the mean salary is $48,454 with a standard deviation of $6677. Construct a 95% confidence interval for the difference between the mean salaries of all women and men at the company. 
@directrix

directrix · Answer

I have to find that formula. It's in your asked questions list, I think.

daniellelovee · Answer

hold on let me check my lesson

daniellelovee · Answer

no that one is wrong I saw it too on yahoo sorry :/

daniellelovee · Answer

http://k12.kitaboo.com/k12/ebookpdf/maths05/17501_HS_PS_chapter06.pdf pg 217

daniellelovee · Answer

@Directrix

daniellelovee · Answer

is it that one?

directrix · Answer

The .pdf is still downloading.

daniellelovee · Answer

oh ok just let me know :)

directrix · Answer

Look on p 225. That is it. I remember that we worked a problem about polling two groups with that formula.

daniellelovee · Answer

alright then do we do the formula and then check?

daniellelovee · Answer

zcrit =1.96

directrix · Answer

Crank out the value of this:

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