![]() ![]() Test Statistic Comparing Two Means Calculator Plugging these values into the formula gives us, And let's say that the standard deviation is 1.7. Let's say we areĭealing with a sample size of 100 students. So in this example, the mean, x, is 15 ($15 for the average working college students spend a day on food). The test statistic for one population mean, which is, Z= ( x - μ 0)/(σ/√ n). So going back to this example, we use the formula for So the alternative hypothesis is that working college students actually spend $20 a day on food instead of the $15 that the economist believes ![]() In this example, we'll say that H a is equal to The alternative hypothesis, H a, is either μ > 15, μ < 15, or μ ≠ 15. The economist is claiming that this average amount is equal to $15. Working college students spend a day on food. ![]() μ represents the average money in dollars amount that all The null hypothesis in this example for this economist is, H 0= μ= $15. ![]() The variable, money, is numerical and the population is Let's say that an economist, Economist William German, believes that students who work and go to college only spend, on average, The Test Statistic for One Population Mean Calculator is a calculator that is used when the variable is numerical and only one population or group ![]()
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