You wish to test the following claim (Ha) at a significance level of a = 0.01. H.:µ = 56.6 Ha:µ < 56.6 %3D You believe the population is normally distributed, but you do not know the standard deviation. You obtain the following sample of data: data 56.4 39.7 35.2 45.6 63 53.6 48.6 47.7 42.6 41.7 40.1 41.4 49.2 48.6 What is the critical value for this test? (Report answer accurate to three decimal places.) critical value = -2.650 What is the test statistic for this sample? (Report answer accurate to three decimal places.) test statistic =

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Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.