In Hypothesis Testing the "Null Hypothesis", Ho, assumes and means:

All observed results in regression analysis are the result of systemic causes;

All observed results in the regression analysis are the result of random chance;

Has nothing to do with regression analysis;

None of the above.

19.In Hypothesis testing the "Alternative Hypothesis", H(A), assumes and means:

All observed results in regression analysis are the results of random chance;

Observed results in the regression analysis are the results of systemic causes with random change having limited probability of effecting the results;

Has nothing to do with regression analysis;

All of the above;

Question 9 (1 point) Which of the following is NOT a property of all probability density functions (pdf) ? O The graph of a probability density function should be on or above the x-axis. A probability density function should be non-decreasing. O The area under any probability density function should be 1. O If X has a pdf f (ac ), then Pa