Posted: April 20th, 2022

Part 3 of Homework

Question Assignment description

#17The quantity of chromium within the weight loss plan has an impact on the best way the physique processes insulin. In an experiment designed to review this phenomenon, 4 diets have been fed to male rats. There have been two elements. Chromium had two ranges: low (L) and regular (N). The rats have been allowed to eat as a lot as they wished (M) or the whole quantity that they might eat was restricted (R). We name the second issue Eat. One of the variables measured was the quantity of an enzyme known as GITH. The means for this response variable seem within the following desk.EatChromiumMRL4.5455.175N4.4255.317(a) Make a plot of the imply GITH for these diets, with the issue Chromium on the x axis and GITH on the y axis. For every Eat group join the factors for the 2 Chromium means. This reply has not been graded but.(b) Describe the patterns you see. Does the quantity of chromium within the weight loss plan seem to have an effect on the GITH imply? Does limiting the weight loss plan quite than letting the rats eat as a lot as they need seem to have an impact? Is there an interplay?This reply has not been graded but.(c) Compute the marginal means. Compute the variations between the M and R diets for every degree of Chromium. Use this info to summarize numerically the patterns within the plot.#20Do left-handed individuals dwell shorter lives than right-handed individuals? A examine of this Question Assignment examined a pattern of 949 demise data and contacted subsequent of kin to find out handedness. Be aware that there are lots of attainable definitions of “left-handed.” The researchers examined the consequences of completely different definitions on the outcomes of their Assessment and located that their conclusions weren’t delicate to the precise definition used. For the outcomes offered right here, individuals have been outlined to be right-handed in the event that they wrote, drew, and threw a ball with the fitting hand. All others have been outlined to be left-handed. Folks have been categorized by gender (feminine or male) and handedness (left or proper), and a 2 × 2 ANOVA was run with the age at demise because the response variable. The F statistics have been 22.36 (handedness), 37.44 (gender), and a couple of.10 (interplay). The next marginal imply ages at demise (in years) have been reported: 77.39 (females), 71.32 (males), 75.00 (right-handed), and 66.03 (left-handed).(a) For every of the F statistics given, discover the levels of freedom and an approximate P-value. Summarize the outcomes of these assessments.This reply has not been graded but.(b) Utilizing the data given, write a brief abstract of the outcomes of the examine.#21 The PLANTS1 information set within the Information Appendix provides the % of nitrogen in 4 completely different species of crops grown in a laboratory. The species are Leucaena leucocephala, Acacia saligna, Prosopis juliflora, and Eucalyptus citriodora. The researchers who collected these information have been occupied with commercially rising these crops in components of the nation of Jordan the place there’s little or no rainfall. To look at the impact of water, they different the quantity per day from 50 millimeters (mm) to 650 mm in 100 mm increments. There have been 9 crops per species-by-water mixture. As a result of the crops are for use primarily for animal meals, with some components that may be consumed by individuals, a excessive nitrogen content material could be very fascinating.Study the residuals. Are there any uncommon patterns or outliers? In case you assume that there are a number of factors which are considerably excessive, rerun the two-way Assessment with out these observations. Does this alteration the leads to any substantial approach?

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