Perform the indicated operation: 101010111111.11 + 1111.01 + 1000.101 O 101011010101.101 O 101011010111.101 O 101001010101.101 O 101011110111.101 O 101001010111.101 O 101011010011.101
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- You are using a z-test to test H0: u=413 vs Ha: u<413 at the a=.1 level. What would the rejection region be for this test?Find the z-score that defines α=0 .05 and α=.01 critical regions for a one-tail test? 8. Find the z-score that defines α=0 .05 and α=.01 critical regions for a two-tail test?Car owner: Collect data in the following table about foreign cars and local cars through customers whose age is under 30 years, at 30 years and over 30 years at a significant degree of 1%. The hypothesis says that the type of car purchased, foreign or local, is not related to the buyers' ages (independence)?
- Assume that MLR1-6 hold. We can say that the coefficient is statistically significant at the 5% level if the t-statistic is less than -2 and the degrees of freedom are larger than 60. True FalseStudies have shown that omega-3 fatty acids have a wide variety of health benefits. Omega-3 oils can be found in foods such as fish, walnuts, and flaxseed. A company selling milled flaxseed advertises that one tablespoon of the product contains, on average, at least 3800 mg of ALNA, the primary omega-3. a) The company plans to conduct a test to ensure that there is sufficient evidence that its claimiscorrect. Tobesafe,thecompanywantstomakesurethatevidenceshowsthe average is higher than 3800 mg. What are the null and alternative hypotheses? b) Suppose, instead, that a consumer organization plans to conduct a test to see if there is evidence against the claim that the product contains an average of 3800 mg per tablespoon. The consumer organization will only take action if it finds evidence that the claim made by the company is false and that the actual average amount of omega-3 is less than 3800 mg. What are the null and alternative hypotheses?A pharmaceutical company wants to know whether an experimental drug has an effect on systolic blood pressure. Fifteen randomly selected subjects were given the drug and, after sufficient time for the drug to have an impact, their systolic blood pressures were recorded. The data appear below: 172140123130115 148108129137161 123152133128142172140123130115 148108129137161 123152133128142 Calculate the values of y¯¯¯y¯ and s for the 15 blood pressure readings.
- Biostatistics Outpatients (N = 36) with type 2 diabetes were referred back to the hospital because of the risk of developing chronic kidney disease (CKD) (possible kidney failure). During their follow-up, some patients were diagnosed with advanced (or end-stage) CKD, requiring an extension of their stay in the hospital, while others were readmitted for further medical assessment. Throughout the study, mortality and hospitalization rates, as well as bio-chemical lab test results, were reported. In addition, the attached data slice contains additional demographic data about the patient group. Q1: Write demographic and lifestyle summary with appropriate statistical tools of descriptive statistics that include Age(years), Gender, Level of deprivation [Townsend or socio-economical status SES], and Marital status.Biostatistics Outpatients (N = 36) with type 2 diabetes were referred back to the hospital because of the risk of developing chronic kidney disease (CKD) (possible kidney failure). During their follow-up, some patients were diagnosed with advanced (or end-stage) CKD, requiring an extension of their stay in the hospital, while others were readmitted for further medical assessment. Throughout the study, mortality and hospitalization rates, as well as bio-chemical lab test results, were reported. In addition, the attached data slice contains additional demographic data about the patient group. Q2: Write a statistical summary for patients’ health status that include Smoking status, Glucose level (mmol/L), C-reactive protein (CRP) (mg/L), Blood urea (mmol/L), Serum creatinine (μmol/L), and Albumin level (g/L).What is the result of the chi square test of independence given in the SPSS output (test statistic, p-value)? (Hint: I have placed a green box around the correct row in the chi-square test table.) What does the chi square test statistic tell you about the association between one’s level of education and one’s level of disagreement with the statement (assume alpha=0.05), and what does it not tell you? test statistic: p-value: Conclusions:
- The average drying time of a manufacturer’s paint is 20 minutes. Investigating the effectiveness of a modifica-tion in the chemical composition of her paint, the manu-facturer wants to test the null hypothesis μ = 20 minutes against a suitable alternative, where μ is the average dry-ing time of the modified paint. (a) What alternative hypothesis should the manufactureruse if she does not want to make the modification in thechemical composition of the paint unless it decreases thedrying time?(b) What alternative hypothesis should the manufactureruse if the new process is actually cheaper and she wants tomake the modification unless it increases the drying timeof the paint?Can someone explain to me what I may have done wrong on this question? A national newspaper reported that 10% of Americans have received the vaccine for Covid-19 (as of February 10, 2021). A local community is concerned that their citizens are not being vaccinated at the same rate as the rest of the nation. In a random sample of 150 residents of this community, 8% have received the vaccine. Is there significant evidence that this community’s rate of vaccination is lower than the nation’s? Test an appropriate hypothesis and state your conclusion. (Make sure to check any necessary conditions and to state a conclusion in the context of the problem.) Ho: p = .1 Ha: p < .1 p-hat (sample proportion) = 0.08, n = 150 n*p-hat = 150*0.08 = 12 and n(1-p-hat) = 150*0.92 = 138 sample is random, sample size is less than 10 percent of the population 0.08-0.1/sqrt(0.1)(.9)/150 = -.82 Was your test one-tail upper tail, one-tail lower tail, or two-tail? Explain why you chose that kind of…Specificity of the association is best described as When the value of the response variable changes in a meaningful way with the dosage of the suspected cause when similar studies produce similar results when all other possible causes are ruled out when the suspected precedes the response variable