To test the hypothesis that the mean has increased at a 5% significance level. What is the critical value of the t-statistic if there are 29 degrees of freedom? 1.31 1.69 1.645
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Step 2: Identify the type of test. The phrase "the mean has increased" indicates a one-tailed (right-tailed) test. Step 3: Identify the significance level ($\alpha$). The significance level is given as 5%, which is $\alpha = 0.05$. Step 4: Identify the degrees Show more…
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To test the hypothesis that the mean has increased at a 5% significance level, what is the critical value of the t-statistic if there are 29 degrees of freedom? Group of answer choices: a. 1.69 b. 1.645 c. 1.31
Madhur L.
A sample mean, sample size, and sample standard deviation are provided below. Use the one-mean t-test to perform the required hypothesis test at the 10% significance level. x̄ = 31, s = 5, n = 24, H0: μ = 29, Ha: μ > 29 Click here to view a partial table of values of tα. The test statistic is t = . (Round to two decimal places as needed.) Identify the critical value(s). Select the correct choice below and fill in the answer box within your choice. (Round to three decimal places as needed.) A. The critical value is tα = B. The critical values are ± tα/2 = ± C. The critical value is -tα = the null hypothesis. The data sufficient evidence to conclude that the mean is
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