To calculate the upper and lower limits of the interval, take the positive critical value and multiply it by the standard error of the mean. Then take the sample mean and add and subtract that
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What is Critical Value In literal terms, critical value is defined as any point present on a line which dissects the graph into two equal parts. The rejection or acceptance of null hypothesis
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Step 1: Identify the values. Significance level = 5% = 5/100 = 0.05. Degree of freedom = 30. Step 2: Look for the significance level in the top row of t distribution table below (one tail) and degree
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