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Mathematics, 11.01.2020 14:31 dnsnmcmdmxmx
You are told that in a sample of size 225 the mean is 48.5 and the standard deviation is 1.8. the study is reported with 90% confidence level. explain how to determine if 48.8 is within the confidence interval.
cl(%); 90, 95, 99
z*score: 1.645, 1.96, 2.58
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