Be sure to put your name on this test. You may write on this test. Circle the co

Question

Be sure to put your name on this test. You may write on this test. Circle the correct answers and then transfer those answers to your scantron. Use PENCIL only. aracterized each of the following statements as being True or False. 1) Assume the claim was null hypothesis. If the analysis contradicted the null about a population parameter then the alternative is supported, i.e., the claim is not supported. a. True b. False 2) The null hypothesis is considered correct until proven otherwise a. True b. False If the claim is that a population parameter is not a specific value, the particular type of problem would be considered a one-tailed test. 3) a. True b. False 4) If the null hypothesis is rejected, this tells us that the alternative is absolutely true a. True b. False In regression analysis with one independent variable, if the slope of the line is positive, then there is a positive correlation between the dependent variable y and the independent variable x 5) a. True b. False In regression analysis with one independent variable, if the y intercept is negative, then there is a negative correlation between the dependent variable y and the independent variable 6) a. True b. False 7) The variable that is being predicted in regression analysis is the independent variable. a. True b. False 8) The value of the correlation coefficient r is always a value between -2 and +2. a. True b. False 9) A correlation coefficient of 0.95 indicates the observations are widely scattered about the regression line. a. True b. False Page | 1

Explanation / Answer

Answer to the question is as follows:

1. True
2. True - this is used in fighting case against criminal cases in court - innocent unless proved guilty
3. False, its a 2 tailed test
4. False. It doesn't transalate to alternative being true. It means we have enough evidence to
reject Ho
5. True. slope>0
6. True, slope<0
7. False, variable being predicted is the dependent variable
8. False. It' always between -1 and 1
9. False. .95 a near perfect correlation indicates points almost on the straight line passing through these points

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