Question Felp Use the t-distribution table to find the critical value(s) for the indicated alternative hypotheses, level of significance a, and sample sizes n, and n. Assume that the samples are independent, normal, and random. Answer parts (a) and (b). Ha: H1 #H2, a = 0.02, n, = 15, n, = 8 (a) Find the critical value(s) assuming that the population variances are equal. (Type an integer or decimal rounded to three decimal places as needed. Use a comma to separate answers as needed.) (b) Find the critical value(s) assuming that the population variances are not equal. (Type an integer or decimal rounded to three decimal places as needed. Use a comma to separate answers as needed.)

Drug Trial ProblemClinical trials for a drug was conducted using a treatment group and a placebo group.  The results are shown in the table below.   Treatment Placebo μ μ₁ μ₂ n 33 38 x̄ 2.31 2.87 s 0.85 0.71 Use a 0.05 significance level to test the claim that the two samples are from populations with different means. State the final conclusion regarding the claim (using p-value). ______________  the HO since the p-value is   __________      the significance level α.

Textbook: Statistics for the Behavioral SciencesGregory J. Privitera Please show your work-Concept and Application Problems (Pg.133) An expert reviews a sample of 10 scientific articles (n = 10) and records the following number of errors in each article: 2, 9, 2, 8, 2, 3, 1, 0, 5, and 7. Compute the SS, variance, and standard deviation for this sample using the definitional and computational formula.

Given the population mean hypothesis H0: μ = 150 and H1: μ ≠ 150 ​identify the the type of test distribution. ​(A) ​Right-tail test ​(B) ​Two-tail test ​(C) ​Left-tail test ​(D) ​None of these

Question Help ▼ Test the claim about the difference between two population means u, and u, at the level of significance a. Assume the samples are random and independent, and t populations are normally distributed. Claim: µ, sH2; a = 0.05. Assume o, #o Sample statistics: X, = 2420, s, = 170, n, = 13 and X, = 2296, s, = 50, n, = 10 Identify the null and alternative hypotheses. Choose the correct answer belew. O A. Ho: H1 SH2 O B. Ho: H1 H2 O F. Ho: H1 = H2 Ha: H1 SH2 Ha: H1 # H2 Find the standardized test statistic t. t3= (Round to two decimal places as needed.) Find the P-value. P = (Round to three decimal places as needed.) Click to select your answer(s).

Constructed Response Question 2 A teacher claims that their students are missing more than 10% of the assignments for the third quarter. We take a random sample of 25 students and see that 12% of their assignments are missing. Using a = 0.05, can we support the teacher's claim? Perform a normal distribution rejection region hypothesis test for proportions. Show all seven steps.

Find the critical value(s) and rejection region(s) for the indicated t-test, level of significance a, and sample size n.  Left tailed test, a=0.10, n=26 The critical value is/are? Determine the rejection regions?

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