The following questions make use of a dataset examining countries throughout the

Question

The following questions make use of a dataset examining countries throughout the world. First, I want to test whether a country’s GDP is related to its status as a developed or developing country. I test two variables – GDP, measured in US dollars annually, and “develop,” measured as a zero / one variable – coded one if the UN considers the country developed (“develope”), and coded zero if the UN classifies it as developing (“developi”). Here is the output of my test:

What is my null and alternate hypothesis?

What kind of test did I conduct?

ttest gd, by (develop) unpaired Two-sample t test with equal variances GroupI develope I Obs Mean Std. Err. Std. Dev. [95% Conf. Interval] 28 13019.611259.617 6665.269 10435.0915604.13 94 combined l diff I diff= mean (develope) 4157.713 11501.61802.8297 -mean (developi) 1518 231.6499 2245.929 1057.989 1978.011 553.501 6113.618 3061.912 5253.514 9912.06 13091.15 t 14. 3263 122 Ho: diff 0 degrees of freedom 120 Ha: diff Itl) = 0.0000 Ha: diff >0 Pr (T > t) = 0.0000 (1

Explanation / Answer

you conducted t stastic test

H0: diff=0

Ha:diff<0

are the null and alternate hypothesis

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