A sample mean, sample size, and sample standard deviation are provided below. Use the one-mean t-test to perform the required hypothesis test at the 1% significance level. x=31, s= 10, n=24, Ho: H=30, H₁: μ> 30
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A: level of significance = sample 1:n1= 135sample 2:n2= 142
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- Use technology to help you test the claim about the population mean, µ, at the given level of significance, a, using the given sample statistics. Assume the population is normally distributed. Claim: Hs 1270; a = 0.06; 6 = 202.73. Sample statistics: x- 1286.71, n= 300 Identify the null and alternative hypotheses. Choose the correct answer below. O A. Ho: H2 1270 O B. Ho: us 1286.71 Hai H 1286.71 O C. Ho: H> 1286.71 O D. Ho: H> 1270 Hai HS 1286.71 Ha: HS 1270 O E. Ho: H2 1286.71 O F. Ho: HS 127O HaiH 1270Please answer subparts listed in the black/white photo. Thank you:)Use technology to help you test the claim about the population mean, u, at the given level of significance, a, using the given sample statistics. Assume the population is normally distributed. Claim: µs 1290; a = 0.05; o = 206.33. Sample statistics: x = 1319.78, n = 250 Identify the null and alternative hypotheses. Choose the correct answer below. O A. Ho: HS1290 B. Ho: H2 1290 HaiH 1290 O C. Ho: H> 1319.78 Ha: HS 1319.78 O D. Ho:s 1319.78 HaiH>1319.78 O E. Ho: H2 1319.78 O F. Ho: H> 1290 Ha: H< 1319.78 Haius 1290 Calculate the standardized test statistic. The standardized test statistic is (Round to two decimal places as needed.) Determine the P-value. P = (Round to three decimal places as needed.) Determine the outcome and conclusion of the test. Ho. At the 5% significance level, there enough evidence to the claim.
- A study was done using a treatment group and a placebo group. The results are shown in the table. Assume that the two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Complete parts (a) and (b) below. Use a 0.05 significance level for both parts. a. Test the claim that the two samples are from populations with the same mean. What are the null and alternative hypotheses? A. Ho: H₁ H₂ H₁: H₁ H₂ OC. Ho: H₁ H2 H₁ H₁ H₂ The test statistic, t, is -1.45. (Round to two decimal places as needed.) The P-value is 0.153. (Round to three decimal places as needed.) State the conclusion for the test. C OB. Ho: H₁Test the claim about the population mean, µ, at the given level of significance using the given sample statistics. Claim: u = 40; ¤ = 0.09; o = 3.34. Sample statistics: x = 38.2, n = 51 Identify the null and alternative hypotheses. Choose the correct answer below. O B. Ho: H#40 O A. Ho: H40 Ha: H = 40 O E. Ho: H= 40 Ha: µ>40 O F. Ho: H= 40 Ha: H# 40 Calculate the standardized test statistic. The standardized test statistic is - 3.85 (Round to two decimal places as needed.) Determine the critical value(s). Select the correct choice below and fill in the answer box to complete your choice. (Round to two decimal places as needed.) O A. The critical value is B. The critical values are t Determine the outcome and conclusion of the test. Choose the correct answer below. Click to select your answer(s).A study was done using a treatment group and a placebo group. The results are shown in the table. Assume that the two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Complete parts (a) and (b) below. Use a 0.05 significance level X for both parts. Treatment Placebo H1 H2 In 31 40 2.35 2.66 0.67 0.95 ... C. Ho: H1 = H2 H1: Hy> H2 'D. Ho:H1 =H2 H,: H1 # H2 The test statistic, t, is - 1.61 . (Round to two decimal places as needed.) The P-value is (Round to three decimal places as needed.)Listed below are the lead concentrations in μg/g measured in different traditional medicines. Use a 0.05 significance level to test the claim that the mean lead concentration for all such medicines is less than 14 μg/g. Assume that the sample is a simple random sample. 15.5 3.5 2.5 4 14 6.5 15.5 3.5 16 9 Determine the test statistic._______ Determine the P-value.________ State the final conclusion that addresses the original claim._______Astudy was done using a treatment group and a placebo group. The results are shown in the table. Assume that the two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Complete parts (a) and (b) below. Use a 0.10 significance level for both parts. 26 2.35 0.87 40 2.6 054 a Test the claim that the two samples are from populations with the same mean.Use the pulse rates in beats per minute (bpm) of a random sample of adult females listed in the data set available below to test the claim that the mean is less than 69bpm. Use a 0.05 significance level. Determine the p-value, test statistic, and whether to reject or support the null hypothesis. Pulse Rates (bpm)4758945542428462993656838640967652866179101964387103596043524566974010140833853398649613552933856446594A sample mean, sample size, and population standard deviation are provided below. Use the one-mean z-test to perform the required hypothesis test at the 1% significance level. x= 19, n=25, a=5, Ho: H=21, H₂: H#21 wwwQuestion Help Instructor-created question Sham Magnet H1 Researchers conducted a study to determine whether magnets can affect back pain. The results are shown in the table for the treatment (with magnets) group and the sham (or placebo) group. The results are a measure of reduction in back pain. Assume that the two samples H are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Use a 0.05 significance level to test thế claim that those treated with magnets have a different mean reduction in than those given a sham treatment. P2 10 10 0.54 0.45 5. 0.62 1.49 pain What are the null and alternative hypotheses? O A. Ho: H1 H2 O C. Ho H1 H2 O D. Ho: H1= H2 H1 P1 H2 ents Upper critical value is: (Round to three decimal places as needed.) Lower critical value is: (Round to three decimal places as needed.) cess Library Click to select your answer(s) and then click Check Answer. Clear All Check…A study was done using a treatment group and a placebo group. The results are shown in the table. Assume that the two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Complete parts (a) and (b) below. Use a 0.01 significance level for both parts. Treatment Placebo μ μ1 μ2 n 26 32 x 2.38 2.63 s 0.85 0.57 a. Test the claim that the two samples are from populations with the same mean. What are the null and alternative hypotheses? A. H0: μ1<μ2 H1: μ1≥μ2 B. H0: μ1=μ2 H1: μ1≠μ2 Your answer is correct. C. H0: μ1=μ2 H1: μ1>μ2 D. H0: μ1≠μ2 H1: μ1<μ2 The test statistic, t, is negative 1.28−1.28. (Round to two decimal places as needed.) The P-value is 0.2060.206. (Round to three decimal places as needed.) State the conclusion for the test. A.…SEE MORE QUESTIONS