Preds_Testa

Preds_Testa - 1. If the null hypothesis was true false, the...

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1. If the null hypothesis was true false, the expected difference between 2 sample means would be B – different from zero 2. The t-test for matched pairs is appropriate for comparing the B – employees’ job satisfaction scores before and after a job enrichment program 3. A rehab center claims “Weights & Aerobics (WA)” is superior to “Aerobics Only (AO).” Sixty adults in poor condition were randomly assigned to either “WA” or “AO” for 12 weeks. Superior fitness is defined by higher oxygenation rates. The alternative hypothesis should be? C – Ha(Uwa – Uao)>0 4. After accepting the Null using ANOVA (F test) we conclude observed differences between D – all possible pairs of mean comparisons must not be statistically significant 5. A consumer lab is testing 2 batteries brands for differences in life (hours) until recharging is needed. Batteries were tested in 10 different digital devices. First, a digital camera used Brand A batteries until recharging was required then the same camera was tested with Brand B batteries. Next a PDA was tested with Brand A until recharging was required, then the same PDA was tested with Brand B. This process was repeated until all 10 different appliances were tested using both brands. What statistic should be used? A – t test for matched pairs
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This note was uploaded on 04/07/2008 for the course STAT 2102 taught by Professor Dr.pred during the Fall '07 term at Temple.

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Preds_Testa - 1. If the null hypothesis was true false, the...

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