Question

20 The alternative hypothesis for the ANOVA F test in the previous exercise is (a) either the Vitamin E or the Memantine treatment has higher mean ADCS-ADL inventory scores than the placebo treatment. (b) both the Vitamin E and Memantine treatments have higher mean ADCS-ADL inventory scores 27. than the placebo treatment. (c) the mean ADCSAD inventory scores for the three groups are not all the same. study 19 A examined the effects of Vitamin E and Memantine on the functional decline of patients in the early stages of Alzheimer's disease. The investiga- tors took 450 patients and randomly divided them into three groups, each containing 150 patients. to Memantine, and the last group to a placebo. The Disease Cooperative Study/Activities of Daily Living One group was assigned to Vitamin E, one group primary response was their score on the Alzheimer's (ADCS-ADL) Inventory, which is designed to assess a patient's functional ability to perform a range of daily living activities, with lower scores indicating worse function. The degrees of freedom for the ANOVA F statistic comparing the mean ADCS-ADL inventory scores are (c) 3 and 147. (b) 2 and 447. (a) 2 and 147.

Answer 1

Giver that utan nd A studly e xaminedl the eect in the cai stages ot Alzheimers els- seau Given 9-the data The total namba pahest-45o Tue total number d leaps 3 Total 450-)=449 m is a and 44 CSI Scanned with CamScanner