Monday

January 26, 2015

January 26, 2015

Posted by **natasha** on Saturday, December 4, 2010 at 4:48pm.

- statistic -
**PsyDAG**, Sunday, December 5, 2010 at 11:59amWe have no access to your sample data.

Z = (mean1 - mean2)/standard error (SE) of difference between means

SEdiff = √(SEmean1^2 + SEmean2^2)

SEm = SD/√(n-1)

If only one SD is provided, you can use just that to determine SEdiff.

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion related to your Z score.

Remember that:

Ho: mean = 172

Ha: mean ≠ 172

**Answer this Question**

**Related Questions**

Stat - the mean of adult men is 172 pounds with a standard deviation of 29 ...

Statistics - Assume the weights of men are normally distributed having a mean of...

statistics - The weight of 14 healthy newborn children was measured. The sample...

Statistics - 9. Assume the weight, W, of a randomly selected adult has a normal...

statistics - A sample of 25 men has a mean weight of 65kg with standard ...

statistics - In response to the increasing weight of airline passengers, the ...

Statisitics:Standard Deviation of Population and o - Standard Deviation of ...

Statistics - The Gibbs Baby Food Company wishes to compare the weight gain of ...

statistic - A grain mill manufactures 100-pound bags of flour for sale in ...

Statistic - Heights of adult men have a mean of 69.0 inches and a standard ...