As part of the United States Department of Agriculture's Super Dump Cleanup in the early 2000s,various sites in the country were targeted for cleanup. Three of the targeted sites - River X, River Y,and River Z - had become contaminated with pesticides because they were located near abandonedpesticide dump sites. Measurements of the concentration of aldrin (a commonly used pesticide) weretaken at twenty randomly selected locations in each river near the dump sites.The boxplots shown below display the five-number summaries for the concentrations, in parts permillion (ppm) of aldrin, for the twenty locations that were sampled in each of the three rivers.River XRiver YRiver Z+3.4(a) Compare the distributions of concentration of aldrin among the three rivers. Use your SOCS.(b) The twenty concentrations of aldrin for River X are given below.4.05.6567Concentrations of Aldrin (ppm)8.6 5.1 8.7River X Aldrin Concentration Data3.7 8.0 5.5 5.384.64.2 4.3 7.37.5 5.3 8.2 4.7 4.84.6Construct a stemplot that displays the concentrations of aldrin for River X.(c) Describe a characteristic of the distribution of aldrin concentrations in River X that can be seen inthe stemplot but cannot be seen in the boxplot.

Given information: X 3.4 4 5.6 3.7 8 5.5 5.3 4.2 4.3 7.3 8.6 5.1 8.7…

Answered: As part of the United States Department…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

2. Floods: Rapid drainage of floodwater is crucial to prevent damage during heavy rains. Several designs for a drainage canal were considered for a certain city. Each design was tested five times, to determine how long it took to drain the water in a reservoir. The following table presents the drainage times, in minutes. Channel Type Drainage Time 1 41.4 43.4 50.0 41.2 2 38.7 48.3 51.1 38.3 3 32.6 33.7 34.8 22.5 4 26.3 30.9 33.3 23.8 5 44.9 47.2 48.5 37.1 a. Construct an ANOVA table. b. Can you conclude that there is a difference in the mean drainage times for the different channel designs? Use the α = 0.01 level of significance.
Exhibit 10-19 Two major automobile manufacturers have produced compact cars with the same size engines. We are interested in determining whether or not there is a significant difference in the MPG (miles per gallon) of the two brands of automobiles. A random sample of eight cars from each manufacturer is selected, and eight drivers are selected to drive each automobile for a specified distance. The following data show the results of the test. Driver 2 3 4 5 6 7 8 nl+n2 - 2 Manufacturer A nl-n2-1 32 On-l 27 26 26 25 29 31 25 That weird one for independent samples Manufacturer B 28 22 27 24 24 Refer to Exhibit 10-19. What is the formula we would use to find the degrees of freedom in this problem? 25 28 27
O 200% v + T. View Zaam Add Page Insert Table Chart Теxt Shape Media Camment Callabarate Format Document Document Section Bookmarks Printer & Paper Size Апу Printer US Letter Question1: Page Orientation Six samples of each of four types of cereal grain grown in a certain region were analyzed to determine thiamin content, resulting in the following data (mg/g). Wheat Barley Maize Oats 8.50 x 11.00 Inches 5.2 6.5 5.8 8.3 4.5 8 4.7 6.1 Header OFooter 6.0 6.1 6.4 7.8 0.5 in 0.6 in 6.1 7.5 4.9 7 Top Bottom V Document Body 6.7 5.9 6 5.5 Document Margins 5.8 5.6 5.2 7.2 1 in 1 in : Top Battom 1 in : a. Using the Analysis of Variance, is there any evidence to support that the thiamin content depends on the type of grain? Use a level of rejection of 0.05. (hint CF=922.56) 1 in : Laft Right b. Based on the answer in part a, conduct Tuckey Procedures. Facing Pages (hint: wheat = 5.71 , īBarety = 6.60, ī Maize = 5.50, xoats = 6.98 ) UHyphenation V Ligatures Question 2: If x= rainfall volume (m)…
i need help on parts a,b and c.
The following data represent the volumes in cubic yards of the largest dams in the United States and in South America. United States South America 125,628 311,539 92,000 274,026 78,008 105,944 77,700 102.014 66,500 56.242 62,850 46,563 52,435 50,000 Source: New York Times Almanac. Send data to Excel Part: 0 / 3 Part 1 of 3 (a) Draw a boxplot of the data for the United States. Round your answers to the nearest thousand. 50000 100000 150000 200000 250000 300000 350000 400000
The quality control department of a fabric finishing plant is studying the effects of several factors on dyeing for a blended cotton/synthetic cloth used to manufacture shirts. Two operators, two cycle times and two temperatures were selected, and three specimens of cloth were dyed under each set of conditions. The finished cloth was compared to a standard, and a numerical score was assigned. The results are shown in the following table Temperature 300° 3500 Сycle Time Operator 1 Operator 1 2 2 23 27 24 38 30 24 28 23 36 25 26 28 35 36 34 37 34 40 35 36 38 39 38 39 35 36 0.05 State and test the appropriate hypotheses using the analysis of variance with a =
A random sample of 20 deaths in the US due to carbon monoxide (CO) poisoning from generators for a particular year was taken and the region (urban core, sub-urban, large rural, small rural/isolated) in which the death occurred was recorded. The recorded data are in the table below. Urban Urban Urban SubUrb SubUrb SubUrb LargeR SmallR SmallR SubUrb LargeR SmallR Urban LargeR LargeR SubUrb Urban SubUrb Urban Urban (a) What is the population? deaths in the US due to carbon monoxide (CO) poisoning deaths in the US due to carbon monoxide (CO) poisoning from generators for a particular year 20 randomly selected deaths in the US due to carbon monoxide (CO) poisoning 20 randomly selected deaths in the US due to carbon monoxide (CO) poisoning from generators for a particular year a randomly selected death a randomly selected death in the US due to carbon monoxide (CO) poisoning from generators for a particular year Region Urban (b) What is the sample? deaths in the US…
An article discussed the opening of a Market. The following data compared the prices of some kitchen staples at the new Market (group 1) and at the old Market (group 2) located 15 blocks away. ITEM GROUP 1 GROUP 2 HALF GALLON MILK 16.8 22.0 DOZEN EGGS 11.7 15.2 ORANGE JUICE (64OZ) 15.6 18.7 HEAD OF LETTUCE 16.7 15.6 1LB GROUND BEEF 17.5 20.8 6OZ TUNA 18.1 19.5 1LB APPLES 14.1 17.0 LINGUINI 21.8 19.5 SALMON STEAK 1LB 13.9 16.5 WHOLE CHICKEN PER LB 20.8 24.0 A. Use math symbol to formulate null hypothesis and alternative hypothesis to test whether there is evidence that the mean price is lower at Group 1 or Group 2. (use without calculator functions)
In an anti malarial campaign in a certain area, quinine was administered to 1,624 persons out of a total population of 6,496. The number of fever cases is shown below : Treatment Fever No Fever Total Quinine 40 1.584 1,624 No quinine 440 4,432 4,872 Total 480 6,016 6,496 Discuss the usefulness of quinine in checking malaria.
rofessor Cornish studied rainfall cycles and sunspot cycles. (Reference: Australian Journal of Physics, Vol. 7, pp. 334-346.) Part of the data include amount of rain (in mm) for 6-day intervals. The following data give rain amounts for consecutive 6-day intervals at Adelaide, South Australia. 7 28 7 1 69 3 1 4 22 7 16 4 54 160 60 73 27 3 3 1 7 144 107 4 91 44 1 8 4 22 4 59 116 52 4 155 42 24 11 43 3 24 19 74 26 63 110 39 34 71 52 39 8 0 15 2 14 9 1 2 4 9 6 10 (i) Find the median. (Use 1 decimal place.)(ii) Convert this sequence of numbers to a sequence of symbols A and B, where A indicates a value above the median and B a value below the median. Test the sequence for randomness about the median at the 5% level of significance. (b) Find the number of runs R, n1, and n2. Let n1 = number of values above the median and n2 = number of values below the median. R n1 n2 (c) In the case, n1 > 20, we cannot use Table 10 of Appendix II to find the critical…
Suppose the 24 soil samples have widely different pH values. What problems may occur by simply randomly assigning the soil samples to the different devices?
The Bureau of Labor Statistics gathers data about employment in the United States. A sample is taken to calculate the number of U.S. citizens working in one of several industry sectors over time. Table 11.16 shows the results: Industry Sector 2000 2010 2020 TotalNonagriculture wage and salary 13,243 13,044 15,018 41,305Goods-producing, excluding agriculture 2,457 1,771 1,950 6,178Services-providing 10,786 11,273 13,068 35,127Agriculture, forestry, fishing, and hunting 240 214 201 655Nonagriculture self-employed and unpaid family worker 931 894 972 2,797Secondary wage and salary jobs in agriculture and private householdindustries 14 11 11 36Secondary jobs as a self-employed or unpaid family worker 196 144 152 492Total 27,867 27,351 31,372 86,590 Table 11.16 We want to know if the change in the number of jobs is independent of the change in years. State the null and alternative hypotheses and the degrees of freedom.

SEE MORE QUESTIONS

Recommended textbooks for you

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

Elementary Statistics: Picturing the World (7th E…

Statistics

ISBN:

9780134683416

Author:

Ron Larson, Betsy Farber

Publisher:

PEARSON

The Basic Practice of Statistics

Statistics

ISBN:

9781319042578

Author:

David S. Moore, William I. Notz, Michael A. Fligner

Publisher:

W. H. Freeman

Introduction to the Practice of Statistics

Statistics

ISBN:

9781319013387

Author:

David S. Moore, George P. McCabe, Bruce A. Craig

Publisher:

W. H. Freeman

SEE MORE TEXTBOOKS