Calculate the degrees of treedom associated with a small-sample test of hypothesis for (41 - 42), assuming ơị2=o22 and ni = n2=13 25 24 33 15
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- Test the null hypothesis H0:μ=3.9 against the alternative hypothesis HA:μ≠3.9, based on a random sample of 29 observations drawn from a normally distributed population with x¯=4.1 and σ=0.89 calculate the appropriate p-value.A researcher is testing a two-tailed null hypothesis at the p < .01 level with df = 48. What critical value would she or he use? Justify your answer.a researcher uses a sample of n=25 individuals to evaluate the effect of a treatment. the hypothesis test uses a=0.05 and produces a significant result with t=2.15. how would this result be reported in the literature?
- A random sample of a size n = 25 is obtained from a population with a variance of σ2 = 400, and the sample mean is computed to be x̅ c = 70. Consider the null hypothesis H0: μ = 80 versus the alternative hypothesis H1: μ = 80. Compute the p-value for this testIf, in a one-tail hypothesis test where H0 is only rejected in the upper tail, the p-value=0.6792 and ZSTAT=−0.47,what is the statistical decision if the null hypothesis is tested at the 0.07 level of significance? What is the statistical decision? Since the p-value is Less than or Greater than or equal to a= , Reject , Do not reject H0.A sample of n = 25 scores produces a t statistic of t = +2.052. If the researcher is conducting a single-sample two-tailed hypothesis test, which of the following is the correct statistical decision?
- The test statistic of z=1.54 is obtained when testing the claim that p=0.723. a. Identify the hypothesis test as being two-tailed, left-tailed, or right-tailed. b. Find the P-value. c. Using a significance level of a=0.10, should we reject H0 or should we fail to reject H0?Test the null hypothesis H0 : β1 = β2 against the alternative H1 : β1 < β2 at 1% significance level.A random sample of 10 professional athletes produced the following data where X is the number of endorsements the player has and Y is the amount of money made (in millions of dollars). Use the 4 steps of hypothesis testing to see if the prediction is significant with a criteria of alpha=.05 on the following data. x y 0 2 3 8 2 7 1 3 5 13 5 12 4 9 3 9 0 3 4 10