Statistics Assignment | Professional Writing Services

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` ` Mind Tap – Cengage Learning – Google Chrome*XA https: / / ng. cengage .com / static / nb / ui/ evo / index. htm ! ? deploymentId = 56.8707 1.048 13.3.9627 3: 07 3 7 4.8053 BLe I S BIN = 978 13.37 27 1950 & LsnapshotId = 105.5362 &Lid = 42519 976.684)Q` CENGAGE | MINDTAP*Q Search this course\- Brianna ~DO : Chapter 9 End – of – Chapter Problems*Attention : Due to a bug in Google Chrome , this page may not function correctly . Click here to learn more .\2. Gravetter / Wallnau / Forzano , Essentials – Chapter 9 – End- of- chapter question 1 1\As AaInfants , Even newborns , prefer to look at attractive faces compared to less attractive Faces ( Slater Et al . , 198 8 ) .

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Inthe study , infants from 1 to 6 days old were shown two photographs of women’s faces . Previously , a group of adultshad rated one of the faces as significantly more attractive than the other . The babies were positioned in front of aScreen on which the photographs were presented . The pair of faces remained on the screen until the baby\2accumulated a total of 20 seconds of looking at one or the other . The number of seconds looking at the attractiveFace was recorded for each infant . Suppose that the study usEd a sample OF 1 = } infants and the data produced anaverage of $1 = 13 seconds for the attractive face with 5.5 = 72 . Note that all the available information comes from*the sample .

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Specifically’ , we do not know the population mean or the population standard deviation .*+ DistributionDegrees of Freedom = 8\+0.3.85 )\ 48.07)- 3.0- 2. 0- 1. 01 . 02.03.0WT N$10.05What is the null hypothesis ?HO : H20USE a two- tailed test with * = . 15 to evaluate the hypothesis . ( Show three decimal places . )t- critical* [ 2 . 1.06\[ 12 . 1.17]The results indicate :"O Failure to reject the null hypothesis ; there is a significant preference .Rejection of the null hypothesis ; there is a significant preference .@ Failure to reject the null hypothesis ; there is not a significant preference .O Rejection of the null hypothesis ; there is not a significant preference*4 . 1 { ZU^ – 201 { Apills . All rights reser!served .} 201] [engage Learning except as notedsted _ All rights reserved !* GradedO Type here to search

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