reached this conclusion.Write a sentence as you would for the results section of a paper. BIUA- A -3. Northem red oak (Quercus rubra) is a common tree species in many temperate deciduousforests in the US. Christian Wyatt and I measured diameter at breast height (DBH) and barkthickness of northern red oak trees in Swope Park in Missouri. We wanted to know if barkthickness is related to stem diameter.What is the null hypothesis?What is the alternative hypothesis?Answer the following questions using the output from R.Coefficients:Estimate Std. Error t value Pr(>|t|)0.006473.008(Intercept)DBH1.255340.417270.420350.0299214.050 1.82e-12 ***o.*** 0.05 ',' 0.1 ' '1Signif. codes:O **** 0.001 ***Residual standard error: 0.9417 on 22 degrees of freedomI Multiple R-squared:F-statistic: 197.4 on 1 and 22 DF,0.8997, Adjusted R-squared:p-value: 1.819e-120.8952What is the equation for the best-fit linear relationship between stem diameter (DBH) and barkthickness?How much of the variation in bark thickness is explained by variation in stem diameter?What conclusion can you make (i.e., accept or reject the null hypothesis)? Explain how youreached this conclusion.

The regression is a popular known statistical method. Regression used to determine the relationship…

Answered: 3. Northem red oak (Quercus rubra) is a…

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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Glaucoma is a leading cause of blindness in the United States, N. Ehlers measured the difference in corneal thickness (in microns) between the two eyes of eight patients. Each patient had one eye that had glaucoma and one eye that was normal. The difference was measured as the corneal thickness of normal eye – corneal thickness of eye with Glaucoma. Corneal thickness is important because it can mask an accurate reading of eye pressure. Use ? = .05. Hypothesis: H0: μd=0Ha: μd≠0 Using output Test statistics : t=0.134P value=0.897 Degrees of freedom (df): df=7 Level of significance: α=0.05 Decision: P value > 0.05 thus we fails to reject null hypothesis. Question a)Write a report summarizing your findings. When writing the report consider that medical staff estimate that a difference of 4.5 microns or more could impact on their ability to interpret eye pressure correctly. b) Define for the hypothesis stated in part b) what a type 1 error and type 2 error would mean. Is it possible…
For a MR model with 4 predictors, we have: SSE 288 and SST = 957 What percentage of the variation in Y is accounted for by its assumed relationship with the predictors?
Water is poured into a large, cone-shaped cistern. The volume of water, measured in cm, is reported at Which of the following would linearize the data for volume and time? different time intervals, measured in seconds. The scatterplot of volume versus time showed a curved Seconds, cm3 O In(Seconds), cm3 Seconds, In(cm') pattern. O In(Seconds), In(cm³)
Ms. Patsy Knowlet, a water quality engineer, noted that there seemed to be a close connection between an important streamflow water quality parameter, Y, and the flow, X m/s. She found that 9 pairs of observations yielded the following data: E*= 152 E* = 576 Ey= Ey* = 5183 y = 1726 45.6 Find the 95% confidence limits of the slope of the regression.
The model Yị = Bo + B, In X;+e; was estimated using E-Views and the results are shown in the following Table. What is the value of the slope at X = 10 Dependent variable: Y Included observations: 10 Variable Coefficient Std. Error t-Statistic Prob. 53.26667 5.770449 9.230940 0.0000 In (x) 0.929992 0.0075 -3.303030 R-squared Mean dependent var 35.10000 Adjusted R-squared.. S.D. dependent var 12.78410 S.E. of regression... Residuals sum square ..... ...... F-statistic Prob(F-statistic) 0.007491
A group of researchers studied the effect of acid rain on wildlife and collected n = 12 samples from streams in different States. They recorded the pH (X) of the water (i.e. units above pH 7), and the BCI, a measure of biological diversity (Y). The data obtained is summarized below. DATA: Observation 1 2 3 4 5 6 7 8 9 10 11 12 pH above 7 (X) 0.65 0.50 0.93 0.86 1.02 0.94 1.16 1.24 1.30 1.45 1.85 1.89 Units of BCI (Y) 14.5 22.9 15.8 38.3 18.9 20.0 21.4 23.8 23.6 25.2 27.3 29.4 Find the correlation coefficient between pH and BCI (round to the nearest hundredth; place your answer in the box below)
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Ocean currents are important in studies of climate change, as well as ecology studies of dispersal of plankton. Drift bottles are used to study ocean currents in the Pacific near Hawaii, the Solomon Islands, New Guinea, and other islands. Let x represent the number of days to recovery of a drift bottle after release and y represent the distance from point of release to point of recovery in km/100. The following data are representative of one study using drift bottles to study ocean currents. Σx = 476, Σy = 87.1, Σx2 = 62,290, Σy2 = 2046.87, Σxy = 11121.3,and r ≈ 0.94367. x days 72 76 32 91 205y km/100 14.7 19.6 5.3 11.7 35.8 a) Use a 1% level of significance to test the claim ? > 0.(Use 2 decimal places.)t =critical t= b) Find the predicted distance (km/100) when a drift bottle has been floating for 60 days. (Use 2 decimal places.)________ km/100 c) Find a 90% confidence interval for your prediction of part (d). (Use 1 decimal place.)lower limit = _____…
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