Need some help please!
Find the following chisquare distribution values from the chisquare distribution table. {Round your answers to three decimal places.) (a) 252.105 with at: 9 15 {b} 12:1025 with (11' 20 2 _ (c) x 0375 With (11' (d) x2031 with dr: 10 (e) x2035 with dr: 18 (a) What is your conclusion ifn1 = 21, 512 = 4.2, :72 = 26, and 522 = 2.0? Use a = 0.05 and the pevalue approach. Find the value of the test statistic. E Find the pvalue. (Round your answer to four decimal places.) State your conclu5ion. O Reject H0. We cannot conclude that 012 s 022. 0 Do not reject H0. We cannot conclude that 0'12 # 922. O Reject HQ. We can conclude that 0'12 as 0'22. 2:02 0 Do not reject H0. We can conclude that '71 2 . (b) Repeat the test using the critical value approach. Find the value of the test statistic. :| State the critical values for the rejection rule. (Round your answers to two decimal places. If you are only using one tail, enter NONE for the unused tail.) test statistic g E test statistic a E State your conclu5ion. O Reject H0. We cannot conclude that 012 s 9'22. 0 Do not reject \"0' We cannot conclude that (.7 2 ii a 2. a The following results are for two independent samples taken from the two populations. Sample 1 Sample 2 n, = 40 n, = 50 X1 = 25.6 X2 = 22.8 71 = 5.8 07 = 6 (a) What is the value of the test statistic? (Round your answer to two decimal places.) (b) What is the p-value? (Round your answer to four decimal places.) (c) With a = 0.05, what is your hypothesis testing conclusion? O Do not reject Ho. There is insufficient evidence to conclude that #, - #2 > 0. O Reject H . There is insufficient evidence to conclude that u, - , > 0. O Do not Reject Ho. There is sufficient evidence to conclude that , - uz > 0. O Reject H . There is sufficient evidence to conclude that #, - #, > 0.The following results are for independent random samples taken from two populations. Sample 1 Sample 2 n1 = 20 n2 = 30 X1 = 22.6 x7 = 20.1 S1 = 2.3 S , = 4.6 (a) What is the point estimate of the difference between the two population means? (Use x, - x2.) (b) What is the degrees of freedom for the t distribution? (Round your answer down to the nearest integer.) (c) At 95% confidence, what is the margin of error? (Round your answer to one decimal place.) (d) What is the 95% confidence interval for the difference between the two population means? (Use x, - x,. Round your answers to one decimal place.) toElement 1 2 Difference 21 20 2 28 27 3 18 16 4 20 17 5 26 23 (b) Compute d. (c) Compute the standard deviation S. (d) Conduct a hypothesis test using a = 0.05. Calculate the test statistic. (Round your answer to three decimal places.) Calculate the p-value. (Round your answer to four decimal places.) p-value = What is your conclusion? O Reject H . There is insufficient evidence to conclude that A > 0.Ho: P1 - P, 50 Ha: P1 - P> > 0 The following results are for independent samples taken from the two populations. Sample 1 Sample 2 n1 = 200 n, = 300 P1 = 0.24 P2 = 0.14 (a) Calculate the test statistic. (Round your answer to two decimal places.) What is the p-value? (Round your answer to four decimal places.) p-value = (b) With a = 0.05, what is your hypothesis testing conclusion? O Reject Ho. There is insufficient evidence to conclude that P, - P, > 0. O Do not Reject H . There is sufficient evidence to conclude that P, - P2 > 0. O Do not reject H . There is insufficient evidence to conclude that p, - P, > 0. O Reject Ho. There is sufficient evidence to conclude that p, - P2 > 0
