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Q: e Evaluate the integral -dx. You may need to do the appropriate substitution first. x3
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- Write a note on Interaction emerges as the most striking feature of a two-factor ANOVA.TEST THE SIGNIFICANCE OF THE CORELATION COEFFICENT AT 0.05 LEVEL OF SIGNIFICANCE. (FOLLOW THE 5-STEP PROCEDURE IN HYPOTHESIS TESTING)A recent study at a college classified a group of 200 students according to whether they attended their classes and whether they passed a particular exam. 93 students attended their classes and passed the exam, 7 students didn't attend their classes but passed the exam, and 60 students didn't attend their classes and failed in the exam. The researcher in the study computed the test statistics. What hypothesis can be tested using the test statistics above And Compute the test statistics appearing above and test the hypothesis of interest . Interpret theresults.
- In a hypothesis test, the null hypothesis states that the population proportion of individuals who support a certain political candidate is equal to 0.6. A sample of size 400 is taken and 175 individuals support the candidate. What is the Z-score for this hypothesis test?In an article, it is said that 18% of people in Dhaka city are COVID-19 positive without symptom. One students is curious to figure it out. She found that 35 of 120 people sampled are positive without symptom. Is the proportion same as the assumption? Calculate the value of test statistic.Immersive ReaderShow all your work. Indicate clearly the methods you use, because you will be scored on the correctness of your methods as well as on the accuracy and completeness of your results and explanations. Patients experiencing symptoms of a heart attack are routinely transported to a hospital in an ambulance. In a study of a new treatment thought to reduce damage to the heart, patients experiencing symptoms of a heart attack were randomly assigned to one of two groups. During transportation to the hospital, patients in one group received standard care, and patients in the other group received the new treatment consisting of standard care and the application of a blood pressure cuff. The response variable measured for each patient was a number between 0 and 1, referred to as the myocardial salvage index (MSI). A higher MSI value indicates a more positive outcome for the patient. Summary statistics for the MSI responses of the two groups are shown in the table below. Do the data provide…
- A neuroscientist examines whether rats, like humans, are predisposed to favor either their right or left side. She counts the number of times out of 50 trials a rat chooses to take the left alley or right alley in a maze. The rat chooses the right alley 34 times. Does this rat show a significant preference for the right side? Enter the data using SPSS and run the chi-square goodness of fit analysis. Using the output, write the five steps of the hypothesis test. Clearly state your decision and what it meansResearchers have found that neotropical rivers support a diverse array of endemic taxa, including electric fishes of the order Gymnotiformes. A comprehensive survey of the main channels of the Amazon River and its major tributaries (>2000-kilometer transect) yielded 43 electric fish species. Biogeographical analyses suggest that local mainstem electric fish diversity is enhanced by tributaries (meaning that downstream in the tributary, the species count should be higher). Test this hypothesis, giving your null hypothesis, the value of your test statistic, and your biological conclusion. Data is here: https://github.com/lisamanne/biostats_data/raw/main/amazon_tributary_electric_fish.csv I��,14,19 Juta�,11,18 Japur�,8,8 Coari,5,7 Purus,10,16 Manacapuru,5,6 Negro,23,24 Madeira,29,30 Trombetas,19,16 Tapaj�s,16,20 Xingu,25,21 Tocantins,10,12please help me out. show full working out for better understanding Hereditary hemochromatosis (HH) is a recessively inherited genetic disorder resulting from mutations in the HFE gene. There are several possible mutations of different degrees of importance but the disease expresses itself only when at least 2 arepresent in any one individual. A blood analysis was performed on 3,000 blood samples from newborn babies of Caucasian descent in the state of Michigan, USA. The results showed that 163 of those sampled carried two mutations in the HFE gene. a. What is the proportion in the sample that carry the two mutations of the HFE gene? b. Calculate the 95% confidence interval for the proportion of this population that carries two mutations in the HFE Check the data for the necessary conditions and show full working. c. Interpret your interval in context d. If the researcher wanted to halve (x ½) the margin of error in the confidence interval found, what sample size would be required…
- 2. What happens when we increase the sample size in the Central Limit Theorem? 3. What is the correlation between the sample and the population in the Central Limit Theorem. Please, mention the two important formulas that correlate?Do people walk faster in the airport when they are departing (getting on a plane) or do they walk faster when they are arriving (getting off a plane)? A reputable researcher measured the walking speed of random travelers in two International Airports. His findings are summarized in the table. 1. Determine the P-value for this hypothesis test.If a hypothesis test produces a z-score in the critical region, which decision should be made? a. fail to reject the alternative hypothesis b. fail to reject the null hypothesis c. reject the alternative hypothesis d. reject the null hypothesis