Question 3a) A traffic survey was carried out to establish a vehicle count at anintersection. A student data collector recorded the numbers of carswaiting in queue each time the green light jumped on. These arehis/her outcomes:3153235712881618558547256342844554334962113523535725824243564693212635353763756Calculate the mean, standard deviation, mode and inter-quartilerange.b) Use the data in question 3a) above and report the level of skewnessand interpret your result.c) Estimate the extent of kurtosis in the above data and interpret yourresulta) What is the difference between cluster sampling method andstratified sampling method? Which one is more practical thantheoretical?

Vehicle count(x)31532357128816185585472563428445543349621523535725824243564693212635353763756

Answered: Question 3 a) A traffic survey was…

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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110 adults with gum disease were asked the number of times per week they used to floss before their diagnoses. The (incomplete) results are shown below: # of times floss per week Frequency Relative Frequency Cumulative Frequency 0 14 0.1273 14 1 15 0.1364 29 2 9 38 3 14 0.1273 4 11 0.1 63 5 17 0.1545 80 6 0.1091 92 7 18 0.1636 110 a. Complete the table (Use 4 decimal places when applicable) b. What is the cumulative relative frequency for flossing 6 times per week? %
Second image is data set
Finish times (to the nearest hour) for 59 dogsled teams are shown below. Draw a relative-frequency histogram. Use five classes. 261 274 236 244 280 296 284 296 288 288 250 256 338 360 341 333 261 267 287 296 313 311 307 307 299 303 277 283 304 305 286 290 286 287 297 299 332 330 309 326 307 326 285 291 295 298 306 315 310 318 318 320 333 321 323 324 327 302 319 The frequency table for the above data is given below. Class Limits Boundaries Midpoint Freq. Relative Freq. Cumulative Freq. 236 – 260 235.5 – 260.5 248 4 0.07 4 261 – 285 260.5 – 285.5 273 9 0.15 13 286 – 310 285.5 – 310.5 298 26 0.44 39 311 – 335 310.5 – 335.5 323 17 0.29 56 336 – 360 335.5 – 360.5 348 3 0.05 59
Complete the stemplot for the following data. 31 37 48 28 30 34 54 39 22 41 43 33 28 55 49 31 35 58 36 29 20 48 23 30 34 22 20 36 34 31 2# | 002238893# | 001113444566794# | 138895# |
Construct a stem-and-leaf display for the following data. Use a leaf unit of 10. Note: if there is nothing to fill in the box, you should leave it empty. If your answer is "zero" enter "0". 1,369 1,770 1,108 1,691 11 12 13 14 15 16 17 1,344 1,246 1,561 1,121 1000000 0000000 0000000 1,771 1,147 1,120 1,313 1,236 1,728 1,556 1,664
Determine whether the underlined value is a parameter or statistics : "In 2017 national survey on teenager pregnancies, 10% of respondents aged 14 to 17 reported that they have a child before the age of 16 yrs."
Construct a stem-and-leaf display for the following data. Use a leaf unit of . Note: if there is nothing to fill in the box, you should leave it empty. If your answer is “zero” enter “0”. 1,543 1,299 1,103 1,557 1,153 1,650 1,190 1,279 1,593 1,416 1,104 1,269 1,665 1,679
Suppose a study of speeding violations and drivers who use cell phones produced the following fictional data: Speeding violation in thelast year No speeding violation in the last year Total Uses cell phone while driving 25 280 305 Does not use cell phone while driving 45 405 450 Total 70 685 755 Calculate P(Driver had no violation in the last year AND was a cell phone user). Round your answer to four decimal places.
The personnel files of all eight employees at the Pawnee location of Acme Carpet Cleaners Inc. revealed that during the last 6-month period they lost the following number of days due to illness: 5 5 4 4 1 2 All eight employees during the same period at the Chickpee location of Acme Carpets revealed they lost the following number of days due to illness: Range Mean 2 1 0 10 2 2 3 0 0 6 Click here for the Excel Data File Required: a. Calculate the range and mean for the Pawnee location and the Chickpee location. (Round the "Mean" to 2 decimal places.) Pawnee location O Chickpee location O Pawnee location Chickpee location b-1. Based on the data which location has fewer lost days?

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