Question

13 questions. please answer all 13 thank you!!

O 110 ar ns bout whether i nteres best performance offer you design a study to test the impact of drinks with different m o nt h s ag es you choose students at random from your introductory psychology course to partite in your studyYou randomly in each student to one of the drinks, each with a care r ation, such that there are seven students wigned to each you then give each of them a plain capsule containing the precise any of one that would be comedia their designated drink and have them aan h e t is minutes later 5 sed The students receive the following arithmetic test scores ter Caffeine Content (m /z) ac! T. - 337 619 = 567 SS1 43 S-18571 SS- - 77 M 76.7143 38.4286 My - 310000 You plan to an ANOVA to test the impact of drws with different catine co o n students best bite what is the null hypothe O The populatio n best scores for the treatments are equal The population means scores for all the treatments are not al qual The polioman best score for the water population is een rom the pot entest score for the co The population mean bester for the treatments are different Call the degrees of freedom and the varices for the following ANOVA table: - OMMEND.... king Control

Answer 1

Sol Null thy bothesis The population mean test scares Hove treatments are equal for all we know, T SS = SS Bt sso S SSB= TSS- sso i complete ANOVA is | MS sources Iss Between 491.81 I df 2 245.905 35.17 within 633.14 118 Total | 1124.95 /20 F M S Between MS win

treatments - F= Mean sum of squauls rean sum of squares between within F = 245.905 35.17 = 6.992 La oool Critical region is : Reject Null bypothesis 16 & F CK-1, NK) je, F > F12,18)00, = F = 6.0129 since, f = 6.992 > 6.0129 so, we reject Null eppothesis. you can does effect reject the wall hypothesis, caffine the test performance,