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Math

Statistics

Draw stem and leaf plot 12 13 21 27 33 34 35 37 37 40 40 41

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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Point A(7, 17); Point B(19, 2) 20 19 18 17 16 15 14 13 12 11 10 9 8 7. 5 4. 3 2 01 2 345 6 7 89 10 11 12 13 14 15 16 17 18 19 20 10
Please show steps using the data/ information provided. Add a new record to the end of the table and then insert the data shown in table 1, using the in-cell drop down list to enter the session value.
Find the measure of each side indicated. Round to the nearest tenth. C 15 54 O 25.5 27.7 O 27.4 О 28.2 17 8 9. 10 11 12 13 14 15 O 18 16 19 20 21 22 23 24 25 26 27 28 29 30
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Lesson 2.2: Do we have Normal test scores? Here are the Chapter 1 Test scores for 80 of the current AP Statistics students. 70 78 78 78 91 87 70 80 63 61 83 87 80 80 85 80 83 93 83 87 93 87 80 87 76 91 78 83 76 83 93 87 89 93 85 85 80 83 83 89 85 76 76 76 78 80 78 85 67 89 80 89 59 91 65 80 83 74 76 78 78 65 78 65 87 76 57 59 87 72 65 78 87 67 80 72 89 85 Is the distribution of Chapter 1 Test scores approximately normal? Justify your answer using several different approaches. The group with the most convincing argument will win a prize.
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d. Selected student is male and his age between 21 and 24 years. e. Selected student is female student or her age less than 21 years. f. Selected student is more than 24 years given that he is male student.
On the following pages you are presented with five problems. Your job is to examine the output and discuss whether there is a statistically significant relationship between the two variables, the pattern or direction of the relationship if the relationship is significant, and the strength of the relationship if the relationship is significant. AS you discuss the strength of the relationship, you will rely on an appropriate measure of association from those that have been given. For that determination, you will need to appropriately determine the level of measurement of each of the variables being examined. Please use the Measures of Association Chart I provided to help you with your determination. You may write your responses on a separate document or next to the problems on this one.
1. Repeat the steps from tab #1 using this data to construct a scatter plot graph and calculate the correlation coefficient R. (Recall the correlation coefficient is R and not R2) Principals x Teachers y 77.8 43.7 78.4 43.8 80.8 45.0 80.5 45.6 R=0.997497 81.5 45.9 2. Does the R value represent a positive, negative or no correlation between the salaries of the teachers and principals? As teacher salaries increase, what happens to 84.8 48.2 87.7 49.3 prinicipal salaries? 91.6 51.3 93.6 52.9 3. Write the equation of the regression line for the data below. The equation is y= 95.7 54.4 95.7 54.2 4. Use the regression equation that you found in exercise #3 to predict the average annual salary of public school classroom teachers when the average annual salary of public school principals is $139,723. Show your work in the cells to the right. (Be careful when entering the x-value in the equation. The table shows numbers that have been adjusted in terms of the thousands. Example: if the salary…
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How long does it take to finish the 1161-mile Iditarod Dog Sled Race from Anchorage to Nome, Alaska? Finish times (to the nearest hour) for 57 dogsled teams are shown below. 261 271 236 244 279 296 284 299 288 288 247 256 338 360 341 333 261 266 287 296 313 311 307 307 299 303 277 283 304 305 288 290 288 289 297 299 332 330 309 328 307 328 285 291 295 298 306 315 310 318 318 320 333 321 323 324 327 For this problem, use five classes. (a) Find the class width. (b) Make a frequency table showing class limits, class boundaries, midpoints, frequencies, relative frequencies, and cumulative frequencies. (Give relative frequencies to 2 decimal places.)
Solve the attached question and round as needed in each part please