Water loss: Human skin loses water through evaporation, and, in general, damaged skin loses water at a faster rate thanundamaged skin. In a study in which the outer layer of skin on a small section of the forearm was partially removed, waterloss (in g/m² per hour) was measured both before and after skin removal. The results for ten individuals were as follows:Subject Before After118282132231520417195182561421711218162812261724910Send data to ExcelPart: 0 / 2Part 1 of 2(a) Construct a 95% confidence interval for the mean increase in water loss. Let d represent the water loss after skinremoval minus the water loss before skin removal (in g/m² per hour). Use the TI-84 Plus calculator and round theanswers to one decimal place.A 95% confidence interval for the mean increase in water loss isX< Hd0.

From the given information, the confidence level is 95%.

Answered: Water loss: Human skin loses water…

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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The velocities (in feet/min) of currents in the Columbia River in Washington State were measured every minute for just over an hour at a depth 95% the depth of the river. The velocities are listed in the table below. 210 208 197 194 210 221 199 210 210 205 201 194 214 163 201 203 208 190 210 217 217 201 184 188 172 184 214 199 205 210 210 201 221 205 192 212 208 226 181 197 212 201 212 194 203 181 202 188 218 201 197 208 197 199 201 199 199 190 205 197 201 236 194 214 210 194 Use this information to answer the following problems.
Please use the accompanying Excel data set or accompanying Text file data set when completing the following exercise. An article in Journal of Food Science (2001, Vol. 66, No. 3, pp. 472-477) studied potato spoilage based on different conditions of acidified oxine (AO), which is a mixture of chlorite and chlorine dioxide. The data are shown below: AO Solution (ppm) % Spoilage 50 100 50 60 100 60 30 30 200 60 50 29 400 25 30 15 (a) Do the AO solutions differ in the spoilage percentage? Use a = 0.05. There is for significant differences in the spoilage percentage when using different AO solutions. (b) Find the P-value of the test. Estimate the variability due to random error. P-value = i (Round your answer to three decimal places.) MSE = i . (Round your answer to the nearest integer.) (c) Plot average spoilage against AO solution and interpret the results. Which AO solution would you recommend for use in practice? AO solution will be used. (d) Analyze the residual plots to determine…
Answer 26and 27 show work
The toco toucan, the largest member of the toucan family, possesses the largest beak relative to body size of all birds. This exaggerated feature has received various interpretations, such as being a refined adaptation for feeding. However, the large surface area may also be an important mechanism for radiating heat (and hence cooling the bird) as outdoor temperature increases. Here are data for beak heat loss, as a percent of total body heat loss from all sources, at various temperatures in degrees Celsius. [Note: The numerical values in this problem have been modified for testing purposes.] Temperature (oC)(oC) 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Percent heat loss from beak 33 32 33 32 39 43 56 48 44 49 44 56 58 60 60 63 The equation of the least-squares regression line for predicting beak heat loss, as a percent of total body heat loss from all sources, from temperature is: (Use decimal notation. Enter the values of the intercept and slope rounded to two…
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."
Researchers were interested in assessing whether stress levels are different at the beginning of the semester compared to finals week. To test this, stress was measured in 5 students at the start of the semester and then again at the end of the semester during finals week. Participant Stress 1 Stress 2 1 22 22 2 32 34 3 24 25 4 28 30 5 26 29 Then H0: μ2 - μ1 ≠ 0, true or false?
Show complete solution and explain the steps in answering.
Jllustration 22.1. The following data gives the number of women child bearing ages and yearly births by quinquinnial age groups for a city. Calculate the general fertility rate and total fertility rate. It the ratio of male to female children is 13: 12, what is the gross re- production rate? Age group 15-19 20-24 25-29 30-34 35-39 40-44 45-49 Female pop. in (000) Births 16 15 14 13 12 11 6. 400 1710 2100 1430 960 330 36
No tortilla chip aficionado likes soggy chips, so it is important to find characteristics of the production process that produce chips with an appealing texture. The following data on x = frying time (sec) and y = moisture content (%) appeared in an article. x 5 10 15 20 25 30 45 60 y 16.4 9.7 8.1 4.2 3.3 2.8 2.0 1.2 (a) Construct a scatter plot of y versus x. y 15 10- 5 y 15 O 10 10 20 30 40 50 5 10 20 10 NE X 50 60 30 60 40 X 15 y 10 O 5 O y 15 10 20 30 40 50 60 10 20 30 Comment. The plot has a curved pattern. A linear model would not be appropriate. O The plot has a curved pattern. A linear model would be appropriate. O The plot does not have a curved pattern. A linear model would be appropriate. O The plot does not have a curved pattern. A linear model would not be appropriate. 40 50 60 X X
NASA is conducting an experiment to find out the fraction of people who black out at G forces greater than 6. Step 1 of 2: Suppose a sample of 525 people is drawn. Of these people, 215 passed out at G forces greater than 6. Using the data, estimate the proportion of people who pass out at more than 6 Gs. Enter your answer as a fraction or a decimal number rounded to three decimal places.
When water flows across farmland, some soil is washed away, resulting in erosion. An experiment was conducted to investigate the effect of the rate of water flow (liters per second) on the amount of soil (kilograms) washed away. The data are given in the following table: Flow rate 0.31 0.85 1.26 2.47 3.75 Eroded soil 0.82 1.95 2.18 3.01 6.07 Let xx represent the flow rate variable and yy represent the variable for soil eroded. Then \bar x = 1.73, s_x = 1.38, \bar y = 2.81, s_y = 1.99xˉ=1.73,sx=1.38,yˉ=2.81,sy=1.99 Use this to complete the following calculation of the correlation coefficient for these data. r = \frac{1}{n-1}\left[\left(\frac{x_1 - \bar x}{s_x}\right)\left(\frac{y_1 - \bar y}{s_y}\right) + \left(\frac{x_2 - \bar x}{s_x}\right)\left(\frac{y_2 - \bar y}{s_y}\right) + \cdots + \left(\frac{x_n - \bar x}{s_x}\right)\left(\frac{y_n - \bar y}{s_y}\right)\right]r=n−11[(sxx1−xˉ)(syy1−yˉ)+(sxx2−xˉ)(syy2−yˉ)+⋯+(sxxn−xˉ)(syyn−yˉ)]…

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