An engineer suspects that a power plant in the city is increasing the air pollution in the vicinity of the plant. A sample of measurements of carbon monoxide (in mg/m3 of air) in the vicinity of the plant (Group 1) is obtained for comparison with another sample obtained from other locations (Group 2) in the city. Dataset is available at pollution.txt Assume that the measurements for both groups follow a normal distribution and the populations' variances are equal. By the 95% confidence interval for the difference between the means of the first group and the second group. i.e., ₁-2, we can conclude that A: With 95% confidence, we have evidence to indicate that there is a difference between the amount of carbon monoxide in the vicinity of the plant and other places. B: With 95% confidence, we have NO evidence to indicate that there is a difference between the amount of carbon monoxide in the vicinity of the plant and other places. OA OB

An engineer suspects that a power plant in the city is increasing the air pollution in the vicinity of the plant. A sample of measurements of carbon monoxide (in mg/m3 of air) in the vicinity of the plant (Group 1) is obtained for comparison with another sample obtained from other locations (Group 2) in the city. Dataset is available at pollution.txt Assume that the measurements for both groups follow a normal distribution and the populations' variances are equal. By the 95% confidence interval for the difference between the means of the first group and the second group. i.e., ₁-2, we can conclude that A: With 95% confidence, we have evidence to indicate that there is a difference between the amount of carbon monoxide in the vicinity of the plant and other places. B: With 95% confidence, we have NO evidence to indicate that there is a difference between the amount of carbon monoxide in the vicinity of the plant and other places. OA OB

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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In recent year, 28 US States had one or more tribal gambling casinos. The following table presents the number of tribal gambling casinos in those states.3 2 26 70 2 2 87 3 4 3 22 39 314 7 3 21 8 2 11114 8 14 1 34 31 4 Find the 5-number summaryConstruct a boxplot for these data
4. Which one of the following data sets has more than one mode? O A. (10, 20, 30, 30, 40, 50, 50) O B. (10, 20, 30, 40, 50, 70, 70) O C. (20, 20, 30, 30, 30, 40, 40) O D. (10, 20, 30, 40, 50, 60, 70)
55
In order to compare two statistics textbooks, Mr.Marin recommends one book to one class and another book to another class. At the end of the year the classes are each examined; the results out of 100 marks are detailed below.Textbook 144 52 95 76 13 94 83 72 55 81 22 25 64 72 35 48 56 59 84 98 84 21 35 69 28Textbook 265 72 48 63 68 59 68 62 75 79 81 72 39 55 58 52 82 79 55 64 53 58 59 64 66 68 42 37(i) Calculate the mean and standard deviation for each class. (ii) Which class performed better?(iii) Which class was more consistent? (iv) Compute the coefficient of variation for each class. Comment on the results.(v) Construct a stem and leaf for each class.(vi) Compute their lower quartile, upper quartile, interquartile range and median for each class.(vii) Using a graph paper, draw a box and whisker plot for each class. Showing all parameters. Commenting on the distribution of the data set. Hence indicate whether there are outliers.
This is a follow up question please answer both
Question The following data represent the time of unit failures, in seconds. 37 25 33 31 43 34 36 22 41 31 35 42 35 30 45 32 37 30 26 34 33 38 31 47 29 33 39 37 44 32 19 41 34 47 38 16 31 26 32 39 Classify data into seven classes and complete the missing information in the table: Class С.В. С.L. С.М. F R.F P ACF RACF PACF DCF RDCF PDCF 1 2 3 4 5 7 Where: C.B.= Class Boundaries, C.L.= Class Limits, C.M.= Class Mark, F= Frequency, R.F.= Relative frequency, P= Percentage, ACF=Ascending Cumulative Frequency, RACF= Relative Ascending cumulative frequency, PACF= Percentage Ascending cumulative frequency, DCF= Descending cumulative frequency, RDCF= Relative %3D Descending cumulative frequency, PDCF= Percentage Descending cumulative frequency.
The mode of the data 15, 13, 19, 15, 25, 22, 15 is O 19 O 15 O 13 О 22 О 25
9. What is the range of the following data set 12,16,16,28,9,20,40,39,32,36,21,50. 39 40 38
Refer to the data below. 38 42 26 22 30 42 36 42 1)The mean is 2)The range is: 3)The difference between the mode and median is: 4)Which measure of dispersion in a data set is calculated using all the values in the set?
Which data set has modes 31 and 14? {48, 14, 38, 41, 44, 14, 11, 12, 31, 22} {31, 14, 38, 41, 44, 10, 14, 12, 31, 22} {48, 14, 38, 41, 41, 10, 11, 12, 31, 22} {48, 14, 38, 41, 44, 10, 11, 12, 31, 22}
You may need to use the appropriate technology to answer this question. The better-selling candies are often high in calories. Assume that the following data show the calorie content from samples of M&M's, Kit Kat, and Milky Way II. M&M's Kit Kat Milky Way II 240 235 200 210 205 208 220 245 202 250 215 190 240 230 180 Test for significant differences among the calorie content of these three candies. State the null and alternative hypotheses. O H,: Median MM = MedianK = Median Mw "KK H: Median MM * Median KK * MedianMW O Ho: Median MM = MedianKK = Median Mw H: Median MM > MedianK > Median,MW O Ho: Not all populations of calories are identical. H: All populations of calories are identical. O Ho: All populations of calories are identical. H: Not all populations of calories are identical. O Ho: MedianMM + MediangK + Median Mw H: Median MM = Medianyk = MedianMw Find the value of the test statistic. (Round your answer to two decimal places.) Find the p-value. (Round your answer to three…