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- Child-Proof Bottles. Designing medication packaging that resists opening by children, but yields readily to adults, presents numerous challenges. In the article “Painful Design” (American Scientist, Vol. 93, No. 2, pp. 113–118), H. Petroski examined the packaging used for Aleve, a brand of pain reliever. Three new container designs were given to a panel of children aged 42 months to 51 months. For each design, the children were handed the bottle, shown how to open it, and then left alone with it. If more than 20% of the children succeeded in opening the bottle on their own within 10 minutes, even if by using their teeth, the bottle failed to qualify as child resistant. Identify the a. experimental units. b. response variable. c. factor(s). d. levels of each factor. e. treatments.Titanic, redux Newspaper headlines at the time, and tra-ditional wisdom in the succeeding decades, have held that women and children escaped the Titanic in greaterproportions than men. Here’s a summary of the relevantdata. Do you think that survival was independent ofwhether the person was male or female? Explain. SexFemale Male TotalSurvivalAlive 343 367 710Dead 127 1364 1491Total 470 1731 2201In the Chernobyl nuclear accident it is estimated that 30,000 people received an average dose of 45 REM. For this population, using the linear hypothesis, how many "normal" deaths from cancer are expected and how many additional deaths from the radiation of the accident? Group of answer choices 500 normal, 6000 additional 1000 normal, 4000 additional 2000 normal, 3000 additional 4000 normal, 1000 additional 6000 normal, 500 additional
- The extending research findings and conclusions from a study conducted on a sample population to the population at large is called? Transferability Generalizability Causality All of the abovea) Test the null hypothesis that, in the presence of X1 and X3, X2 contributes no use-ful information for predicting Y . Please, provide: hypotheses, test statistic, p-value (orrejection region), and conclusion. Use α = 0.05. Could X2 be removed from the model? b)b) Test the null hypothesis that, in the presence of X3 = the number of square feet of living space,the two independent variables X1 = the number of bedrooms and X2 = the number of bathroomsare insignificant predictors of Y . Please, provide: hypotheses, test statistic, p-value (orrejection region), and conclusion. Use α = 0.05.Windy, part III Exercises 12 and 14 give summaries anddisplays for two potential sites for a wind turbine. Testan appropriate hypothesis to see if there is evidence thateither of these sites has a higher average wind speed.
- he following data represents the annual sales of a Digitech Automation products SAOG. Year 2014 2015 2016 2017 2018 Sales (in Millions) OMR 380 440 520 396 514 Use method of least squares to calculate the trend values and the forecast for the future period. Which of the following is the annual sales forecast for the year 2020 using least squares method? a. 584.4 Million OMR b. 539.6 Million OMR c. 606.8 Million OMR d. 562 Million OMRThe Salk Vaccine. In the 1940s and early 1950s, the public was greatly concerned about polio. In an attempt to prevent this disease, Jonas Salk of the University of Pittsburgh developed a polio vaccine. In a test of the vaccine’s efficacy, involving nearly 2 million grade-school children, half of the children received the Salk vaccine; the other half received a placebo, in this case an injection of salt dissolved in water. Neither the children nor the doctors performing the diagnoses knew which children belonged to which group, but an evaluation center did. The center found that the incidence of polio was far less among the children inoculated with the Salk vaccine. From that information, the researchers concluded that the vaccine would be effective in preventing polio for all U.S. school children; consequently, it was made available for general use.A test of body reaction to the Malaysian citizens who have taken their vaccine was conducted. Selected citizens who got side effect are categorised according to their blood type and the type of vaccine received. From a sample of 250 citizens, 150 of them were administered with Sinovac while the rest received AstraZeneca. Table 4 shows the number of citizens who had side effect after being vaccinated. Type of vaccine Blood type A B AB O Sinovac 50 M 50 20 AstraZeneca 30 20 20 N Does different blood type among people who had side effect relate to the type of vaccinereceived at A=0.025?
- Show what correction (using the generalized least squares method) we should use if the form of heteroskedasticity was the following, show mathematically For both a) and b)What I Can DoCOVID -19 RecoveriesThe ongoing pandemic of corona virus disease 2019, a novel infectious disease causedby severe acute respiratory syndrome was spread in the Philippines onJanuary 30, 2020. Thousands of people in the country tested positive in this virus, and some ofthem recovered from the disease. The following table shows the number of recoveries from April24-May 3, 2020DateApril 24April 25April 26April 27April 28April 29April 30May 1May 2May 3Number of Recoveries X40307070434820414090a. Illustrate the probability distribution if X is the random variable that represents the number ofrecoveries.b. What safety precautions will you undertake to help avoid the spread of the COVID-19ppandemicaSize of Car Small Medium Large Foreign 291 250 340 548 501 696 507 396 333 Domestic 408 472 217 374 368 331 370 345 168 Source DF SS MS F P Type 1 36360 36360.1 2.42 0.146 Size 2 14396 7198.2 0.48 0.630 Interaction 2 41221 20610.7 1.37 0.290 Error 12 180113 15009.4 Total 17 272091 Use the technology display, which results from the head injury measurements from car crash dummies listed below. The measurements are in hic (head injury criterion) units, and they are from the same cars used for the table below. Use a 0.05 significance level to test the given claim. Test the null hypothesis that head injury measurements are not affected by an interaction between the type of car (foreign, domestic) and size of the car (small, medium, large). What do you conclude? what…