(1 point) An Office of Admission document claims that 54.3% of UVA undergraduates are female. To...
Next Problem Problem List Previous Problem (4 points) An Office of Admission document claims that 55.2 % of UVA undergraduates are female. To test this claim, a random sample of 225 UVA undergraduates was selected. In this sample, 57.89% were female. Is there sufficient evidence to conclude that the document's claim is false? Carry out a hypothesis test at a 49% significance level. A. The value of the standardized test statistic: Note: For the next part, your answer should use...
(3 points) Suppose that we are to conduct the following hypothesis test. Ho H980 H1: μ > 980 suppose that you also know that σ-: 200, n 100, 1020, and take α-: 0.01 . Draw the sampling distribution, and use it to determine each of the following A. The value of the standardized test statistic: Note: For the next part, your answer should use interval notation. An answer of the form -oo, a is expressed (-infty, a), an answer of...
(1 point) Suppose that you are to conduct the following hypothesis test: Ho: H : u 4 = + 490 490 Assume that you know that o = 125, n = 42, X = 458.75, and take a = 0.005. Determine each of the following: The value of the standardized test statistic: Note: For the next part, your answer should use interval notation. An answer of the form (-0, a) is expressed (-infinity, a), an answer of the form (b,...
Need help with part B (1 point A matched pairs experiment is carried out, yielding the following data np-54, 2.2, s8.1 Is there evidence, at an a 0.08 level of significance, to conclude that there is a difference between the two sets of measurements? Carry out an appropriate hypothesis test, filing in the information requested A The value of the standardized test statistic -1.995880531 Note: For the next part, your answer should use interval notation. An answer of the form...
Find B. (1 point) Suppose that you are to conduct the following hypothesis test: 0 H 510 H1: μ 510 Но Assume that you know that σ = 80, n = 42, x = 493.2, and take α = 0.01 . Draw the sampling distribution, and use it to determine each of the following: A. The value of the standardized test statistic: 1.36 Note: For the next part, your answer should use interval notation. An answer of the form (-00,...
(1 point) A matched pairs experiment is carried out, yielding the following data: np = 75, ID = -1.2, p = 7.4 Is there evidence, at an a = 0.07 level of significance, to conclude that there is a difference between the two sets of measurements? Carry out an appropriate hypothesis test, filling in the information requested. A. The value of the standardized test statistic: Note: For the next part, your answer should use interval notation. An answer of the...
(7 points) A company that sponsors LSAT prep courses would like to be able to claim that their courses improve scores by at least 3 percentage points. To test this, they take a sample of 8 people, have each take an initial diagnostic test, then take the prep course, and then take a post-test after the course. The test results are below (scores are out of 100%): Post-Test Person Initial Test 75 81 79 83 77 90 2 3 4...
Suppose that we are to conduct the following hypothesis test: H0:H1:μμ=>970970H0:μ=970H1:μ>970 Suppose that you also know that σ=220σ=220, n=85n=85, x¯=1016.2x¯=1016.2, and take α=0.005α=0.005. Draw the sampling distribution, and use it to determine each of the following: A. The value of the standardized test statistic: Note: For the next part, your answer should use interval notation. An answer of the form (−∞,a)(−∞,a) is expressed (-infty, a), an answer of the form (b,∞)(b,∞) is expressed (b, infty), and an answer of the...
Suppose that we are to conduct the following hypothesis test: Ho : u = 1020 H: 1 # 1020 Suppose that you also know that o = 230. n = 90. x = 1056.8, and take a = 0.05. Draw the sampling distribution, and use it to determine each of the following: The value of the standardized test statistic (test data z data or t data): Type your answer here Note: For the next part, your answer should use interval...
Random samples of resting heart rates are taken from two groups. Population 1 exercises regularly, and Population 2 does not. The data from these two samples is given below: Population 1: 71, 66, 71, 68, 67, 68, 68 Population 2: 75, 69, 72, 71, 72, 69, 69, 70 Is there evidence, at an ?=0.08 level of significance, to conclude that there those who exercise regularly have lower resting heart rates? (Assume that the population variances are equal.) Carry out an...
> I don't get that procedure
Michael Lancheros Sun, Feb 6, 2022 7:19 PM