(Ch12) At what age do babies learn to crawl? Does it take longer to learn in thewinter when babies are often bundled in clothes that restrict their movement? Datawere collected from parents who brought their babies into the University of DenverInfant Study Center to participate in one of a number of experiments between 1988and 1991. Parents reported the birth month and the age at which their child was firstable to creep or crawl a distance of 4 feet within 1 minute. The resulting data weregrouped by month of birth: January, May, and September:Crawling ageBirth monthMeanSt. dev. nJanuary29.847.0832MaySeptember28.588.072733.836.9338Crawling age is given in weeks. Assume the data represent three independent simplerandom samples, one from each of the three populations consisting of babies born inthat particular month, and that the populations of crawling ages have Normaldistributions.A partial ANOVA table is given below.DFSourceSum ofMeansquares505.26squareGroupsError53.45TotalDetermine whether each of the following statements is true or false.A)This is a randomized, designed experiment.The date Determine whether each of the following statements is true or false.A)This is a randomized, designed experiment.The data show no strong evidence of violating the assumption thatthe three populations have the same standard deviation.An ANOVA cannot be used on these data because the sample sizesB)C)are different.D)An ANOVA cannot be used on these data because the data showvery strong evidence of non-Normal population distributions.

Name: (Ch12) At what age do babies learn to crawl? Does it take longer to l
Uploaded: 2024-03-20T07:07:00.000Z
Channel: Bartleby
Description: (Ch12) At what age do babies learn to crawl? Does it take longer to learn in thewinter when babies are often bundled in clothes that restrict their movement? Datawere collected from parents who brought their babies into the University of DenverInfan