20250505 7.3 One-Sample Test for the Mean
All data are from Statistic with Technology by Dr. Kozak Example 7.3.1 test of the mean using the formula 158 180 150 137 109 225 122 138 145 180 118 118 126 140 165 150 170 105 154 118 mean = 145.4 sample SD = (= STDEV.S) 29.27438255 (145 - 100) ÷ (29.27 ÷ √(20)) ≈ 6.937 t-table we can use: https://www.sjsu.edu/faculty/gerstman/StatPrimer/t-table.pdf Take note: You can reject a null hypothesis when a p-value is less than or equal to your significance level. If our test statistic is: positive and greater than the critical value, then we have sufficient evidence to reject the null hypothesis and accept the alternative hypothesis. positive and lower than or equal to the critical value, we must accept the null hypothesis. Information from: Numeracy, Maths, Statistics New Castle University Scribb Statsig HOMEWORK 1 The Kyoto Protocol was signed in 1997, and required countries to start reducing their carbon emissions. The protocol became enforceabl...