A random sample of 25 values is drawn from a mound-shaped and symmetric distribution. The sample mean is 7 and the sample standard deviation is 2. Use a level of significance of 0.05 to conduct a two-tailed test of the claim that the population mean is 6.5. How many degrees of freedom do we use? (If it is not appropriate to use a Student's t distribution enter NONE.)
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The null hypothesis (H0) is that the population mean (μ) is equal to 6.5. The alternative hypothesis (H1) is that the population mean is not equal to 6.5. Mathematically, this can be represented as: - H0: μ = 6.5 - H1: μ ≠ 6.5 Show more…
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