Given the following hypotheses for an experiment with n=12, what is the appropriate ferit at α=0.05 Ho: Hab Ha: Ma>b
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Q: Consider the following hypothesis test. H: p - >0 05 - t:0H The following results are for two…
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Q: Formula: df = n 1 (for one-sample B. df = n -1 mean test) df = 16-1 df = (₁ + ₂) - 2 (for two-…
A: Given Information: n=29x=48.1μ=50α=0.01s=0.9
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A: GivenHa:μ=10t-stat =-2.2n=10
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A: We need to answer for which of the given hypothesis t-test is used.
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Q: When the following hypotheses are being tested at 5% level with o known Ho: H 2 11 H1:µ 1.96 or, <…
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Q: a) Given a = 0.05, for what values of a will you reject Ho? = 5) Using µ 4.25, what is the…
A: Given information: H0:μ=4Ha:μ>4 σ=2n=100α=0.05
Q: QUESTION 4 In testing the hypothesis Ho: H= 800 vs. Ha: H 800, if the value of the test statistic…
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Q: Given μ=12and σ=2.3,what would be the z-score for 15?
A: Given, μ=12σ=2.3x=15
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A: Sample size(n)=64Sample mean()=53.5population standard deviation()=10
Q: Consider the following hypothesis test: Ho : μ > 45 Ha: μ < 45 sample of 36 is used. Identify the…
A: Given hypothesis test H0:sample size =36Level of significance =0.01
Q: 4. N=1728, e = 0.01 5. N=1304, e = 0.05 %3D
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Q: In testing hypothesis Ho : μ = 75 vs Ha : μ ≠ 75, the following information is known: n = 64, x̅ =…
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Q: When the following hypotheses are being tested at 5% level with o known Họ: U 2 11 H1:P 1.645 O b. >…
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Q: A test is conducted for Ho: μ = 20, with o = 4. A sample of size 36 has X = 21.4. The test statistic…
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A: Given: p=45%=0.45x=32n=100α=0.01
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Q: A z-test statistic is calculated to be 2 = 1.95. Find the appropriate p-value. 0.0624 0.05118 0.0312…
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Q: The one-sample ?t‑statistic for a test of ?0:?=0H0:μ=0 versus ?1:?≠0H1:μ≠0 based on ?=15n=15…
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Q: Given: σ = 0.9, δ = 3.25 − 3, α = 0.05 , Zα/2 = z0.025 What sample size would be required to…
A: δ = 3.25 − 3 Effect Size = (3.25 − 3) / 0.9 = 0.277
Q: Ho: p=0.29 HA:P 0.29 a. p=0.11 p-value= (Round to three decimal places as needed.)
A: H0:p=0.29Ha:p≠0.29
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Q: 1.1 1.2 In testing the hypotheses Ho: = 50 vs. H₁: μ50, the following information is known: n = 64,…
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- Consider the following hypotheses: Hg: H 2 160 НА: и < 160 The population is normally distributed. A sample produces the following observations: 152 138 151 144 151 142 Conduct the test at the 1% level of significance. (You may find it useful to reference the appropriate table: z table or table) a. Calculate the value of the test statistic. (Negative value should be indicated by a minus sign. Round final answer to 2 decimal places.) Test statistic): A null hypothesis is that the average blood pressure for adult is 70. For a sample of 60 adults, the average blood pressure is 71.8. A significance test is done, and the p-value is 0.02 what is the most appropriate conclusion? O A. Reject the hypothesis that the sample average is 70 O B. Reject the hypothesis that the population averages 70 O C. Conclude that the population average is 70 O D. Conclude that the population averages 71.8 O E. None of these6. Given a population Mean u=18.2. A sample size n = 36 with x =17.2 and s = 3.5. Test if population µ ±15at a= 0.1 level of significance.
- 156% of studentss entering four-year colleges receive a degree within six years. Is this percent larger than for students who play intramural sports? 183 of the 286 students who played intramural sports received a degree within six years. What can be concluded at the level of significance of a = -0.10 a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: 7 v ||Select an answer V (please enter a decimal) H [?v||Select an answer v (Please enter a decimal) c. The test statistic 7v (please show your answer to 3 decimal places.) d. The p-value (Please show your answer to 4 decimal places.) e. The p-value is ? va f. Based on this, we should Select an answer vthe null hypothesis. g. Thus, the final conclusion is that ,Given the following null and alternative hypotheses, conduct a hypothesis test using an alpha equal to 0.05. (Note: The population standard deviations are assumed to be known.) H0: µ1 ≤ µ2 HA: µ1 > µ2 The sample means for the two populations are shown as follows: sample mean 1 = 144, sample mean 2 = 129 population standard deviation 1 = 11, population standard deviation 2 = 16 sample size 1 = 40, sample size 2 = 50 Answer: Decision Rule : Reject H0 if Zcal > citical value Z = Test statistic: (Z calculated) Zcal = (use 4 decimal places)Conclusion: H0.A sample of n sludge specimens is selected and the pH of each one is determined. The one-sample t test will then be used to see if there is compelling evidence for concluding that true average pH is less than 7.0. What conclusion is appropriate in each of the following situations? USE SALT (a) n = 8, t= -2.8, a = 0.05 O Reject the null hypothesis. There is sufficient evidence that the true average pH is less than 7.0. O Reject the null hypothesis. There is not sufficient evidence that the true average pH is less than 7.0. O Do not reject the null hypothesis. There is sufficient evidence that the true average pH is less than 7.0. O Do not reject the null hypothesis. There is not sufficient evidence that the true average pH is less than 7.0. (b) n = 15, t= -3.5, a = 0.01 O Reject the null hypothesis. There is sufficient evidence that the true average pH is less than 7.0. O Reject the null hypothesis. There is not sufficient evidence that the true average pH is less than 7.0. O Do not…
- 7. In testing the hypothesis The test statistic is found to be Z = 2.03. Which of the following is the correct p-value? Họ: u = 35 Hạ: u > 35 %3D A. 0.9788 B. 0.0424 C. 0.0212 D. 1.9576 E. None of theseLet n₁ = 50, X₁ = 40, n₂ = 50, and X₂ = 20. Complete parts (a) and (b) below. a. At the 0.05 level of significance, is there evidence of a significant difference between the two population proportions? Determine the null and alternative hypotheses. Choose the correct answer below. OA. Ho: ₁2π₂ H₁: π₁ π₂ C. Ho: π₁ #1₂ H1: П1 =П2 Calculate the test statistic, ZSTAT, based on the difference P₁ - P2. The test statistic, ZSTAT, is (Type an integer or a decimal. Round to two decimal places as needed.) Calculate the p-value. O D. Ho: ₁ = π₂ H₁: π₁ #π₂ 퍼 The p-value is. (Type an integer or a decimal. Round to three decimal places as needed.)A researcher claims that the incidence of a certain type of cancer is less than 5%. To test this claim, the a random sample of 4000 people are checked and 170 are determined to have the cancer. The following is the setup for this hypothesis test: Ho p 0.05 Ha :p< 0.05 In this example, the p-value was determined to be 0.015. come to a conclusion and interpret the results for this hypothesis test for a proportion (use a significance level of 5%) Select the correct answer below O The decision is to reject the Null Hypothesis. The conclusion is that there is enough evidence to support the claim o The decision is to fail to reject the Null Hypothesis. The conclusion is that there is not enough evidence to support the claim.
- State the alternative hypotheses for the following claim: For the state of Washington, over 12% of high school mascots are eagles. State the alternative hypotheses for the following claim: For the state of Washington, over 12% of high school mascots are eagles. p > .12 p < .12 μ > .12 μ < .122. Given the following null and alternative hypotheses: Ho : Ti π together with the sample information: Sample 1 Sample 2 ni = 200 n2= 250 X1 = 55 X2 = 65 Test the hypotheses at 0. 05 level of significance.In a study of obesity the following results were obtained from samples of males and females between the ages of 20 and 75: n Males 150 Females 200 Number Overweight 21 48 Can we conclude from these data that in the sampled populations there is a difference in the proportions who are overweight? Let α = .05.