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Suppose the preliteracy scores of three year old students in the United States are normally...

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Suppose the preliteracy scores of three year old students in the United States are normally distributed Shelia a preschool teacher wants to estimate the mean score on preliteracy tests for the population of three year olds She draws a simple random sample of 20 students from her class of three year olds and records their preliteracy scores in points 81 84 87 91 91 91 92 92 94 95 97 99 100 102 106 107 107 111 115 116 Click to download the data in your preferred format CrunchIt CSV Excel JMP Mac Texty Minitab14 18 Minitab18 PC Text R SPSS TI Calc I Calculate the sample mean x sample standard deviation s and standard error SE of the students scores Round your answers to four decimal places

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