A randomized double-blind test was done to test the effectiveness of a drug designed to improve memory in Alzheimer's patient. 20 patients took the drug and 16 patients took the placebo. Patients were given a pre and post memory test (a list of 15 words to recall) and an improvement score (post test score - pre test score) was recorded for each patient. Assume all conditions for t-tests are met. For a,b ll in each blank with either =, >, or <. mean sd drug placebo h0 : pt b suppose you have prior evidence that the works group took should a higher score then ha .11 pplmebo c which test perform sample ttest or matched why pts compute statistic. how many df if we want to conservatively e find pvalue and make your conclusion f redo part by r. please attach r output. use exact instead of conservative one. g in fact based on study also know two groups same population standard deviation. h made mistake. when calculated used z table t table. would p-value be bigger smaller using wrong briey state reason support answer. could compare shape distributions upper tail probabilities for critical value. more specically distribution is atter than normal has heavier tails.>