Q3) The following data represents thescore of 40 students in one exam26724159608835481184367350619570465628741491272239774487604590634388712986706955*:b) The Median is6767.56868.5none of all above O

Observations in the ascending order are…

Answered: Q3) The following data represents the…

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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Some people believe that different octane gasoline result in different miles per gallon in a vehicle. The following data is a sample of 11 people which were asked to drive their car only using 10 gallons of gas and record their mileage for each 87 Octane and 92 Octane. Miles with Miles with Person 87 92 Octane Octane 1 234 237 2 257 238 243 229 4 215 224 5 114 119 287 297 7 315 351 8. 229 241 9 192 186 10 204 209 11 547 562 Do the data support that different octanes produce different miles per gallon at the a = 0.02 level of significance? Note: A normal probability plot of difference in car mileage between Octane 87 and Octane 92 indicates the population could be normal and a boxplot indicated no outliers. a. Express the null and alternative hypotheses in symbolic form for this claim. Assume Ha = H1 - H2, where 4i is the population mean mileage for Octane 87 and lz is the mean mileage for Octane 92. Ho: Ha Select an answer H1: Ha Select an answer b. What is the significance level? a =…
Following are the marks obtained by 49 students, calculate median the two quartiles and 86th percentile: 38 60 40 41 29 40 58 56 40 56 39 40 54 40 53 54 37 53 45 50 36 50 35 50 32 45 30 56 30 50 45 36 43 30 28 42 22 42 20 18 24 26 18 17 15 27 42 29 30
A group of 80 students took a statistics Exam in the following scores were recorded68 84 75 82 68 90 62 88 76 93 73 79 88 73 58 93 71 59 58 51 61 65 75 87 74 62 95 78 63 72 66 96 79 65 74 77 95 85 78 86 71 78 78 62 80 67 69 83 76 62 71 75 82 89 67 58 73 74 73 65 81 76 72 75 92 97 57 63 68 83 81 82 53 85 94 52 78 88 77 71 Calculate median exam score
A sample of 25 freshmen at a major university completed a survey that measured their degree of racial prejudice (the higher the score, the greater the prejudice) Compute the median and mean for these data? 10 43 30 30 45 40 12 40 42 35 45 25 10 33 50 42 32 38 11 47 22 26 37 38 10
Assume we have data on all of the the students in our class. There are 25 students in the class. There are 4 seniors in the class and there are 6 juniors. What is the cumulative relative frequency of juniors and seniors?
The scores of 80 participants in a dart contest are: 58 49 48 61 68 71 42 36 62 50 82 76 61 50 82 60 36 80 70 52 60 72 58 70 35 55 66 47 84 55 32 46 68 70 62 58 48 75 49 67 48 53 55 57 60 82 40 69 54 63 66 70 72 68 42 55 36 46 59 50 78 67 39 68 72 48 72 56 70 66 70 55 46 72 68 88 54 39 40 56 (a) Find the mean score of the data above. (b) Construct a Stem-and-Leaf chart for the data above. (c) Find the mode of the scores. (d) Find the median of the scores.
The following shows a list of a student's homework grades for a grading period: 80, 90, 84, 86, 95 Which center should be used to best represent the data? O a) The median trade is 86. O Đ) The mode of the grades is 80. OO The range of the grades is 15. Oal The mean grade is 87.
In a city with three high schools, all the ninth graders took a Standardized Test, with these results: High School Mean Test Score Number of ninth graders (Frequency) Glenwood 81 284 Central 95 323 Lincoln 69 154 The city's PR manager, who never took statistics, claimed the mean score of all ninth graders in the city was the average of 81, 95, and 69, which is 81.7. Of course, that is incorrect. What is the mean score for all ninth graders in the city? Round to one decimal place. mean of all ninth grader's scores =
In a city with three high schools, all the ninth graders took a Standardized Test, with these results: High School Mean Test Score Number of ninth graders (Frequency) Glenwood 79 279 Central 94 349 Lincoln 70 161 The city's PR manager, who never took statistics, claimed the mean score of all ninth graders in the city was the average of 79, 94, and 70, which is 81. Of course, that is incorrect. What is the mean score for all ninth graders in the city? Round to one decimal place. Mean of all ninth grader's Scores =
If the following seven scores are ranked from smallest to largest, then what rank should be assigned to a score of X = 1? Scores: 1, 1, 1, 1, 3, 6, 6, 6, 9
The data sets give the ages of award winners from 2000 to 2005 at the time of the award. Use the data to answer the questions. Men Women a) Without calculating, which data set has the greater mean age? Year 2000 2001 2002 STABI 2003 2004 2005 ~ Men Age Phil 44 39 Geoff 47 Chris Ed Sean 33 41 Mike 46 b) Verify your conjecture from part (a) by calculating the mean age for each data set. Mean (Men) 41.67 Mean (Women) 29 (Round to the nearest hundredth as needed.) IT Year 2000 2001 2002 2003 2004 2005 Women Megan Elizabeth Katherine Tanya Susan Jennifer Age 24 35 27 27 29 32

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Q3) The following data represents the score of 40 students in one exam 26 72 41 59 60 88 35 48 11 84 36 73 50 61 95 70 46 56 28 74 14 91 27 22 39 77 44 87 60 45 90 63 43 88 71 29 86 70 69 55 * :b) The Median is 67 67.5 68 68.5 none of all above