Given : Hypothesis : Vs
A. The standardized test statistic is ,
B. Critical value :
The rejection region :
Here ,
Therefore , Do not reject Ho
C. P-value =
D. Here , P-value = 0.02275 >
Therefore , Do not reject Ho
(3 points) Suppose that we are to conduct the following hypothesis test. Ho H980 H1: μ...
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...
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,...
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...
(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,...
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...
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...
(1 point) An Office of Admission document claims that 54.3% of UVA undergraduates are female. To test this claim, a random sample of 200 UVA undergraduates was selected. In this sample, 54.2% were female. Is there sufficient evidence to conclude that the document's claim is false? Carry out a hypothesis test at a 3% significance level. A. The value of the standardized test statistic: Note: For the next part, your answer should use interval notation. An answer of the form...
Two random samples are taken, one from among first-year students and the other from among fourth-year students at a public university. Both samples are asked if they favor modifying the student Honor Code. A summary of the sample sizes and number of each group answering yes'' are given below: First-Years (Pop. 1):Fourth-Years (Pop. 2):n1=95,n2=93,x1=48x2=58 Is there evidence, at an α=0.05 level of significance, to conclude that there is a difference in proportions between first-years and fourth-years? Carry out an appropriate...
(a) Find 6,-x2). answer: (b) Determine the rejection region for the test of H. : (H1 - H2) = 2.1 and H,:(H1 - H2) > 2.1 Use a = 0.01. Z > (c) Compute the test statistic. z = The final conclustion is A. We can reject the null hypothesis that (H1-H2) = 2.1 and accept that (H1-H2) > 2.1. OB. There is not sufficient evidence to reject the null hypothesis that (M - M2) = 2.1. (d) Construct a...
(4 points) A random sample of 12 second-year university students enrolled in a business statistics course was drawn. At the course's completion, each student was asked how many hours he or she spent doing homework in statistics. The data are listed below. 51 64 63 54 63 52 63 57 55 65 59 58 It is known that the population standard deviation is 7. The instructor has recommended that students devote 5 hours per week for the duration of the...