Suppose a study of speeding violations and drivers who use cell phones produced the following fictional data:Speeding violation in thelast year25Uses cell phone while drivingDoes not use cell phone whiledrivingTotalTable 3.24570No speeding violation in thelast year280405685Totala. Find P(Driver is a cell phone user).b. Find P(driver had no violation in the last year).c. Find P(Driver had no violation in the last year AND was a cell phone user).305450755The total number of people in the sample is 755. The row totals are 305 and 450. The column totals are 70 and685. Notice that 305 + 450 = 755 and 70 +685 = 755.Calculate the following probabilities using the table.

Probability Probability may be defined as the ratio of favourable outcome to the total outcome.

Answered: Suppose a study of speeding violations…

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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22Determine whether the given value is from a discrete or continuous data set. When a car is randomly selected, it is found to have a tire pressure of 28 psi. Choose the correct answer below . a. A continuous data set because there are infinitely many possible values and those values cannot be counted. b. The data set is neither continuous nor discrete . c. A discrete data set because there are infinitely many possible values and those can be counted. d. A discrete date set because there are a finite number of possible values.
(a) Determine the population mean pulse. The following data represent the pulse rates (beats per minute) of nine students enrolled in a statistics course. Treat the nine students as a population. Complete parts (a) through (c). The population mean pulse is approximately beats per minute. (Round to one decimal place as needed.) Student Pulse O Perpectual Bempah 76 Megan Brooks Jeff Honeycutt 80 85 Clarice Jefferson 75 Crystal Kurtenbach 60 Janette Lantka 64 Kevin McCarthy 79 Tammy Ohm 80 Kathy Wojdya 84
Consider the following data set: 72 31 55 31 40 34 53 46 59 77 69 62 44 59 44 36 75 44 Below is a partially completed stem-and-leaf diagram for this data set: 3 5 29 Determine the correct values for the missing entries, and fill them in. If no value is needed for a given entry, then enter X.
Suppose that a customer is purchasing a car. He conducts an experiment in which he puts 10 gallons of gas in the car and drives it until it runs out of gas. He conducts this experiment 15 times on each car and records the number of miles driven. Full data set Car 1 216 243 205 242 239 297 295 172 270 251 165 310 265 316 278 Car 2 231 220 223 205 245 257 242 292 248 252 287 255 250 293 251 Median for Car 2 M=___________mi / 10 gal (Type an integer or decimal rounded to one decimal place as needed.) Range for Car 1 R=__________mi / 10 gal (Type an integer or decimal rounded to one decimal place as needed.) Range for Car 2 R=__________mi / 10 gal (Type an integer or decimal rounded to one decimal place as needed.) Sample standard deviation for Car 1 s=_________mi / 10 gal (Type an integer or decimal rounded to one decimal place as needed.) Sample standard deviation…
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
(a) Determine the population mean pulse. The following data represent the pulse rates (beats per minute) of nine students enrolled in a statistics course. Treat the nine students as a population. Complete parts (a) through (c). The population mean pulse is approximately beats per minute. (Round to one decimal place as needed.) Student Pulse O Perpectual Bempah 81 Megan Brooks Jeff Honeycutt 75 75 Clarice Jefferson 84 Crystal Kurtenbach 90 Janette Lantka 71 Kevin McCarthy 67 Tammy Ohm 71 Kathy Wojdya 85
Consider the following Venn diagram that summarizes the data from 50 people. How many people own just one pet? Birds 10 10 1. 2. 2. Cats Dogs 32 22 25 20 cer
Suppose there are 5 students in a room. The mean age is 19.8 years, and the median age is 19. If the youngest person leaves and is not replaced by another person, what happens to the mean and the median? O The mean and median increase. The mean increases, and the median either increases or stays the same. The mean increases, but it is impossible to determine whether the median increases, decreases, or stays the same. The mean increases, and the median stays the same. The median increases, and the mean either increases or stays the same.
Let x be the percentage of 16- to 19-year-olds not in school and not high school graduates. Let y be the reported violent crimes per 1000 residents. Six small cities in Arkansas (Blytheville, El Dorado, Hot Springs, Jonesboro, Rogers, and Russellville) reported the following information about x and y. x 24.2 18.6 17.8 14.9 19.0 17.5 y 13.0 4.6 8.8 1.3 0.8 3.6 Complete parts (a) through (e), given Σx = 112, Σy = 32.1, Σx2 = 2137.7, Σy2 = 282.89, Σxy = 654.37, and r ≈ 0.763. (b) Verify the given sums Σx, Σy, Σx2, Σy2, Σxy, and the value of the sample correlation coefficient r. (Round your value for r to three decimal places.) Σx = Σy = Σx2 = Σy2 = Σxy = r = (c) Find x, and y. Then find the equation of the least-squares line = a + bx. (Round your answers for x and y to two decimal places. Round your answers for a and b to three decimal places.) x = y = = + x

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