A study was done on body temperatures of men and women. 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. a. Use a 0.01 significance level to test the claim that men have a higher mean body temperature than women. What are the null and alternative hypotheses? O B. Ho: H1 = H2 O A. Ho: H12 H2 H: H1 H2 OC. Ho: H1#H2 H1:41
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- K The following data represent the level of health and the level of education for a random sample of 1761 residents. Does the sample evidence suggest that level of education and health are independent at the a= 0.05 level of significance? Conduct a P-value hypothesis test. State the hypotheses. Choose the correct answer below. OA. Ho: Level of education and health are independent. H₁: Level of education and health are dependent. 31 OB. Ho: E₁ and μ₂ E₂ and 3 =E3 and μ4 =E4 O C. Education Not a H.S. graduate H.S. graduate Some college Bachelor Degree or higher H₁: At least one mean is different from what is expected. Ho: P1 P2 P3 H₁: At least one of the proportions are not equal. Calculate the test statistic. Xo = (Round to three decimal places as needed) Excellent 97 118 107 66 Good 190 144 196 105 Fair 95 93 75 54 Poor 130 93 105 93 0An electrician wants to know whether batteries made by two manufacturers have significantly different voltages. The voltage of 93 batteries from each manufacturer were measured. The population standard deviations of the voltage for each manufacturer are known. The results are summarized in the following table. Manufacturer Sample mean voltage (millivolts) Population standard deviation (millivolts) A 153 4 B 152 3 What type of hypothesis test should be performed? Select: Two-tailed z-test Right-tailed z-test Right-tailed t-test Left-tailed t-test What is the test statistic? Does sufficient evidence exist to support the claim that the voltage of the batteries made by the two manufacturers is different at the α=0.01 significance level? Select: _____Yes OR _____NoAlso need help with finding out the Test satistic and P Vaule.
- Test the claim that the two samples described below come from populations with the same mean. Assume that the samples are independent simple random samples. Use a significance level of 0.01. Sample 1: n1=100, x¯1=13, s1=0.5. Sample 2: n2=67, x¯2=15, s2=5. The test statistic is The P-Value isPlease answer subparts listed in the black/white photo. Thank you:)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 n are equal. Complete parts (a) and (b) below. Use a 0.10 significance level for both parts. What are the null and alternative hypotheses? OA. Ho: H₁ H₂ H₁: Hy #H₂ OC. Ho: H₁ H₂2 H₁: Hy > H₂ (Round to two decimal places as needed.) The P-value is (Round to three decimal places as needed.) The test statistic, t, is ← OB. Ho: H₁A 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 indicated claim about the means of two populations. Assume that the two samples are randomly selected, independent, the population standard deviations are not know and not considered equal. Subjects are given a creativity exercise on a computer with either a red background or a blue background. The scores are shown in the table. At the 0.01 significance level, test the claim that blue enhances performance on a creative task. Red Background Blue Background n1 = 41 n2 = 44 xˉx̄1 = 19.2 xˉx̄2 = 18.7 s1 = 0.88 s2 = 0.35 What are the correct hypotheses? (Select the correct symbols and use decimal values not percentages.)H0: Select an answer μ(blue) s₁² μ₂ p₂ p̂₁ σ₁² p μ₁ x̄₂ μ x̄₁ p₁ ? < ≥ ≠ ≤ = > Select an answer p₁ μ s₁² σ₁² μ₂ p₂ x̄₁ p̂₁ μ(red) μ₁ p x̄₂ H1: Select an answer x̄₁ x̄₂ p₁ μ₁ μ μ(blue) p p₂ σ₂² s₂² p̂₂ μ₂ ? ≤ < = ≥ ≠ > Select an answer σ₁² x̄₂ p₁ x̄₁ μ₁ p p₂ μ μ₂ p̂₁ s₁² μ(red) Original Claim = Select an answer H₁ H₀ df = Based on…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 0.10 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? OA. Ho H1 H2 H₁: H1 H2 o C. Ho: H = 2 H₁: H1 H2 OB. Ho: H1 H2 H1 H1 H2 OD. Ho H1 H2 H₁: 12 Treatment Placebo μ H1 H2 n 27 31 X 2.35 2.65 S 0.95 0.55Suppose that you want to perform a hypothesis test for a population mean. Assume that the population standard deviation is unknown and that the sample size is relatively small. In each exercise, we have given the distribution shape of the variable under consideration. Decide whether you would use the t-test, the Wilcoxon signed-rank test, or neither. Explain your answers. Symmetric bimodal- 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. 27 35 n 2.33 2.67 0.96 0.52 D. Ho H2 C. Ho# The test statistic, t, is(Round to two decimal places as needed.)Test the claim below about the mean of the differences for a population of paired data at the level of significance a. Assume the samples are random and dependent, and the populations are normally distributed. Claim: H. 20; a = 0.05. Sample statistics: d= - 2.2, s, = 1.5, n= 14 Identify the null hypothesis by writing its complement. OB. Ho: Ha s0 OA Ho: Ha #0 H: Ha =0 OD. Ho: Ha0 VE. Ho: Ha20 Ha: Hd <0 The test statistic is t= (Round to two decimal places as needed.)SEE MORE QUESTIONSRecommended textbooks for youMATLAB: An Introduction with ApplicationsStatisticsISBN:9781119256830Author:Amos GilatPublisher:John Wiley & Sons IncProbability and Statistics for Engineering and th…StatisticsISBN:9781305251809Author:Jay L. DevorePublisher:Cengage LearningStatistics for The Behavioral Sciences (MindTap C…StatisticsISBN:9781305504912Author:Frederick J Gravetter, Larry B. WallnauPublisher:Cengage LearningElementary Statistics: Picturing the World (7th E…StatisticsISBN:9780134683416Author:Ron Larson, Betsy FarberPublisher:PEARSONThe Basic Practice of StatisticsStatisticsISBN:9781319042578Author:David S. Moore, William I. Notz, Michael A. FlignerPublisher:W. H. FreemanIntroduction to the Practice of StatisticsStatisticsISBN:9781319013387Author:David S. Moore, George P. McCabe, Bruce A. CraigPublisher:W. H. 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