When the following hypotheses are being tested at a level of significance of a Но: 2 100 Hạ: µ< 100 the null hypothesis will be rejected if the test statistic Z is а. < -Za/2 O b. > Za/2 C. > Za O d. <-Za
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A: Given : Claim : The mean age of bus drivers in Chicago is 59.2 years.
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A: Note: Hi, thank you for the question. As per our company guideline we are supposed to answer only…
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A: Solution: State the hypotheses. Null hypothesis: H0: µ = 52.9 That is, the mean age of bus drivers…
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A: Hypothesis Formulation Null Hypothesis, H0: p = 5.8% Since psychologist claim that more than 5.8% of…
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Q: The null hypotheses should be rejected for p-value = 0.0153 and a 0.01 %3D
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Q: When the following hypotheses are being tested at 5% level with o known Ho: µ 2 11 H1:H 1.645 C. >…
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A: As per our guidelines, we are allowed to answer first three sub-parts only. Thanks The following…
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A: Claim: A cereal company claims that the mean weight of the cereal in its packets is at least 14 oz.…
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Q: The test statistic for testing HO: mu = 100 against Ha: mu != 100 was t = 3.3, with p-value of…
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Q: Consider a hypothesis Ho where u= 5 against H, where u > 5. The test is? Center tailed Cross tailed…
A: Given : Mean = μ = 5
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Q: Suppose we want to test the null hypothesis H0 : p1 − p2 = 0 against the alternative hypothesis Ha :…
A: 5% level of significance X1=70 N1=100 X2=90 N2=120
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A: To test:H0:μ≥11H1:μ<11 So, the test is left tailed.
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Q: If the decision rule for a one-tailed test of hypothesis is given as: Reject Ho if z<-2.36. What…
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A: It is given that the test statistic value is 0.96 and the P-value is 0.169.
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- If a binomial experiment has probability p success, then the probability of failure is ____________________. The probability of getting exactly r successes in n trials of this experiment is C(_________, _________)p (1p)If the decision rule for a one-tailed test of hypothesis is given as: Reject Ho if z<-2.36. What is the value of alpha?If a researcher decides to reject the null hypothesis using an alpha level of α = 0.05 at the conclusion of a hypothesis test, then they would include the statement of "p < 0.05" when writing their research report.
- If your null and alternative hypothesis are:H0:μ=70H0:μ=70H1:μ<70H1:μ<70Then the test is: two tailed left tailed right tailedCollege administrators at the same institution are further concerned about the differences in binge drinking behaviors among men and women on campus. Suppose of the 268 participants surveyed about their drinking habits that reported binge drinking behaviors, 94 were female. Is there statistically significant evidence at the alpha level of 0.05 that males partake in binge drinking behaviors more so than females involved in Greek life organizations? Write out your null and alternative hypotheses and interpret your results. A. Hypotheses: H0: p=0.50 and Ha: p<0.50 B. Test Statistic: (Normal approximation to the binomial is used) ���^ = 0.03054 zstat= -4.88678 C. P-value: P < 0.0002 D. Significance level: Are the results significant? Group of answer choices Yes, the evidence against H0 is not sufficient to warrant its rejection. Yes, the evidence against H0 is sufficient to warrant its rejection. No, the evidence against H0 is not sufficient to…A doctor claims that less than 30 percent of all per-sons exposed to a certain amount of radiation will feel any ill effects. If, in a random sample, only 1 of 19 per-sons exposed to such radiation felt any ill effects, test the null hypothesis θ = 0.30 against the alternative hypothe-sis θ < 0.30 at the 0.05 level of significance.
- The National Institute of Mental Health published an article stating that in any one-year period, approximately 9.1% of American adults suffer from depression or a depressive illness. Suppose that in a survey of 2000 people in a certain city, 10.5% of them suffered from depression or a depressive illness. Conduct a hypothesis test to determine if the true proportion of people in that city suffering from depression or a depressive illness is more than the 9.1% in the general adult American population. Test the relevant hypotheses using a 1% level of significance. Give answer to at least 4 decimal places. a. What are the correct hypotheses? (Select the correct symbols and use decimal values not percentages.) H0: H1: b. Based on the hypotheses, find the following: c. Test Statistic = d. p-value = e. Based on the above we choose to f. The correct summary would be:The following are the hypotheses for a test of the claim that college graduation statue and cola preference are independent. H0: College graduation status and cola preference are independent. H1: College graduation status and cola preference are dependent. If the test statistic is χ2=0.579 and the critical value is χ2=5.991, what is your conclusion about the null hypothesis and about the claim? A. Fail to reject the null hypothesis. There is sufficient evidence to warrant rejection of the claim that college graduation status and cola preference are independent. B. Reject the null hypothesis. There is not sufficient evidence to warrant rejection of the claim that college graduation status and cola preference are independent. C. Fail to reject the null hypothesis. There is not sufficient evidence to warrant rejection of the claim that college graduation status and cola preference are independent. D. Reject the null hypothesis. There is sufficient…When is a researcher at risk of making a type 2 error? whenever H0 is rejected whenever H1 is rejected whenever H0 fails to reject the risk of a type 2 is independent of the decision from a hypothesis test
- In a clinical trial, 29 out of 853 patients taking a prescription drug daily complained of flulike symptoms. Suppose that it is known that 2.9% of patients taking competing drugs complain of flulike symptoms. Is there sufficient evidence to conclude that more than 2.9% of this drug's users experience flulike symptoms as a side effect at the α=0.1 What are the null and alternative hypotheses?Find the Type II error given that the null hypothesis, H0, is: there are no more than 15% of structures in the county were built without permits.And, the alternative hypothesis, Ha, is: a building inspector claims that more than 15% of structures in the county were built without permits. Select the correct answer below: The building inspector concludes that more than 15% of the structures in the county were built without permits when, in fact, no more than 15% of the structures were built without permits. The building inspector concludes that more than 15% of the structures in the county were built without permits when, in fact, more than 15% of the structures were built without permits. The building inspector cannot conclude that more than 15% of the structures in the county were built without permits when, in fact, no more than 15% of the structures were built without permits. The building inspector cannot conclude that more than 15% of the structures in the county were…Suppose a research study uses two independent groups with 31 participants in each group. If a t-test analysis produces a calculated value of t of 2.22, which of the following is the correct decision? A. At the .05 level of significance, reject the null hypothesisB. At the .05 level of significance, fail to reject the null hypothesisC. At the .01 level of significance, reject the null hypothesisD. Impossible to answer without additional information
