A number of studies have shown lichens (certain plants composed of an alga and a fungus) to be excellent bio-indicators of air pollution. An article gives the following data (n = 13) on x = NO3- wetdeposition (g N/m²) and y= lichen (% dry weight):x 0.05 0.10 0.11 0.12 0.31 0.37 0.42 0.58 0.68 0.68 0.73 0.85 0.92y 0.53 0.58 0.45 0.54 0.57 0.53 1.03 0.89 0.90 1.02 0.91 1.00 1.66PredictorConstantno3 depoEstimate0.393290.92860.1767S =0.1866R-sq=71.5%Standard Error0.09566t Stat4.115.26p-value0.0020.000R-sq (adj)=68.9%(a) What are the least square estimates of B and ẞ₁? (Round your answers to three decimal places.)bo==(b) What is the margin of error for a 95% CI for ẞ₁? (Round your answer to four decimal places.)Margin of Error =(c) Predict lichen N for an NO3 - deposition value of 0.7. (Round your answer to three decimal places.)% dry weight(d) What is the estimate of σ? (Round your answer to four decimal places.)S =% dry weight

The question is about regression analysis.Let x = NO3- wet decomposition (g N/m2 )and y= lichen (%…

Answered: A number of studies have shown lichens…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A study about the effect of different type of vitamin and food on chicken growth (weight in grams) has been investigated. The incomplete two-way ANOVA output is given as: SS i. ii. iii. iv. Source of Variation Type of vitamin Type of food Interaction Within Total E 1544.4 F 136198.69 df 1 D 2 12 MS 69688.89 21016.7 G 1911 State the experimental units in this experiment. Calculate D, E, F, G. You must show the calculation process. P-value 5.86 X 10-5 0.002 0.676 At a 5% significance level, what can you conclude from the ANOVA output? Support your answer. Conclude in the context of the above scenario. Comment whether this statement is correct or incorrect and state your reason: "The main effect refers to the effect of a factor on two independent variables."
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Calculate the L-scale (A₂) for the following data set of observed flows: Q = [10, 4, 3, 9] Answer:
Pork is the most preferred meat by a lot of meat consumers. Studies have shown that diets high in pork protein have favorable effects on a person's body composition. However, it is unclear whether these effects are specific to pork or whether consumption of other high protein meat diets have the same benefit. To investigate this, the nutritionist of a private diet center chose a random sample of overweight clients to participate in a 3-month program where each person is required to follow a restricted high-protein diet program with only one type of meat (chicken, fish, or pork). Before and after the program, the triglyceride level and weight of each client were recorded. Suppose the nutritionist asks your statistical advice for this study. 1. The nutritionist wants to study whether the mean change in triglyceride level of the clients differs among the three meat diets. She then asked your statistical advice considering that you have enough knowledge that using a parametric test…
Much concern has been expressed regarding the practice of using nitrates as meat preservatives. In one study involving possible effects of these chemicals, bacteria cultures were grown in a medium containing nitrates. The rate of uptake of radio-labeled amino acid (in dpm, disintegrations per minute) was then determined for each culture, yielding the following observations. 7,256 6,876 9,634 6,867 9,091 5,848 7,061 7,491 7,882 8,173 7,521 8,721 8,959 7,973 X 7,463 Suppose that it is known that the mean rate of uptake for cultures without nitrates is 8,000. Do the data suggest that the addition of nitrates results in a decrease in the mean rate of uptake? Test the appropriate hypotheses using a significance level of 0.10. Find the test statistic and P-value. (Use technology to calculate the P-value. Round your test statistic to two decimal places and your P-value to four decimal places.) t = P-value = 0.2142 State your conclusion. O Fail to reject Ho. We have convincing evidence that…
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An engineer measures the peak current (in microamps) when a solution containing an amount of nickel (in parts per 10°) is added to a buffer. The experiment was repeated for eleven different values of nickel solutions. A scatterplot showing the data is given below: Peak Current in Eleven Buffers with Added Nickel Solutio 60 120 140 100 Amount of nickel (pp million) Suppose a regression line was added to the plot above. If an additional measurement had been taken with the nickel of 62 parts per 10 and a peak current of 0.38 microamps, adding this observation would: O A. increase the intercept, decrease the slope. OB. increase the intercept, increase the slope. C. decrease the intercept, increase the slope. OD. decrease the intercept, decrease the slope. E. not affect the regression line.

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