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ID: 3063253 • Letter: I
Question
Ink Tools Table Tools oft Word Mailings Review View Design Layout Pens : . lli Normal ||NoSpaci Heading 1 Heading y. .| .. : Styles Paragraph Forty children participated in a study ofthe effectiveness of augmentative communication therapy. The children were matched for expressive language scores, intelligence scores, and age at the beginning of the study. One member of each matchedpair was a child with autism andthe other member of the matched pairs was a child with Down syndrome. Researchers hypothesized that children with Down Syndrome (D) would have more success with the therapy than childzen with Autism (A). Success was measured at the end of the 3 month study by the number of spont aneous commurication attempts the children made using the augmentative communication device in a 4 hour aftemoon session What type of test should they use to test this hypothesis? r anindependent samplest-test a single sample t-test az-test C a dependent samples t-test Researchers were interested in the effects co-sleeping on night-time waking and crying in infants. They assessed the number of minutes parents reported that their infants were awake and crying for a period of3 days. Ten ofthe infants co-dept with their mothers (Co) and 10 infants slept in a enb in another room (Cr). The researchers wanted to see if their was a difference in the totalnumber of minutes of crying during the 3 nights for the 2 groups of infants. Whattype oftest should they use to test this hypothesis? c anindependent samples t-test a dependent samplest-test a single sample t-test a z testExplanation / Answer
Ans:
1)As,subjects are paired with each other and are measuremnts dependent are compared between pairs,so this study is dependent sample t test.
2)As,there are two different groups,one who slept in a crib in another room and onw who slept with their mothers,measured independently of each other.So,this study is an independent samples t test.