4-5. Railroad Crossing Accidents The data show the num-ber of railroad crossing accidents for the 50 states of theUnited States for a specific year. Construct a histogram,frequency polygon, and ogive for the data. Comment onthe skewness of the distribution. (The data in this exer-cise will be used for Exercise 15 in this section.)Class limitsFrequency1-432444-8687-12917130-1723.173-215216-258259-301302-344Total 50Source: Federal Railroad Administration.2-26177-7Go to www.aleks.com and click on StLUN NOW! under the Registered UseSTEP 1:

Answered: 4- 5. Railroad Crossing Accidents 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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I) determine the number of classes ii) estimate the greatest and least frequencies. iii) determine the class width describe any patterns with the data.
Please do not give solution in image format thanku A car salesman collected data on how many cars were sold at a dealership per day for two weeks. The results were as follows: 6, 7, 4, 3, 1, 2, 6, 6, 6, 7, 4, 4. Make a frequency table and then make a histogram based on that frequency table. What is the shape of the distribution? O Skewed to the right O Skewed to the left O Bimodal O Symmetrical
During one shift, the express lane clerk recorded how many times customers violated the "10 items or less" rule for his lane. In particular, he recorded how many items over the limit each violator placed on the conveyor belt. This data is summarized in the histogram below. NOTE: The last class actually represents "7 or more items," not just 7 items. Frequency SHIFT 14- 12 10- 8- 6 CAPS 0.5 1.5 2.5 3.5 4.5 5.5 5.5 6.5 7.5 #items over 10 Q What is the frequency of times the limit was exceeded by at least 2 items? 38°F Clear 4 ans 2H TAB 61 Check Answer ESC ! F1 ! Q A Z BEBEEEE F2 X 2 W S F3 # * 3 Q Search X E F4 LA 4 F5 с % R 5 LLI F6 T V 6 HCO F7 1111 4+ 7 Y F8 G H * 00 с F9 J B N
Determine the leaves for the given data points in the range of 80 to 89 for this stem leaf plot
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1. Find the class midpoints of the first three classes (20-29,30-39, and 40-49) 2. Is the data displayed in the frequency table approximately normal? Explain your reasoning
Identify the lower class limits, upper class limits, classwidth, class midpoints, and class boundaries for the given frequency distribution. Also identify the number of individuals included in the summary. Age (yr) when award was won Frequency 10-13 28 14-17 34 18-21 15 22-25 3 26-29 6 30-33 1 34-37 2 Identify the lower class limits. 1010,1414,1818,2222,2626,3030,3434 (Type integers or decimals. Do not round. Use ascending order.) Identify the upper class limits. 1313,1717,2121,2525,2929,3333,3737 (Type integers or decimals. Do not round. Use ascending order.) Identify the class width. 44 (Type an integer or a decimal. Do not round.) Identify the class midpoints. nothing,nothing,nothing,nothing,nothing,nothing,nothing (Type integers or decimals. Do not round. Use ascending order.) Identify…
Identify the lower class limits, upper class limits, class width, class midpoints, and class boundaries for the given frequency distribution. Also identify the number of individuals included in the summary.complete a-f a. Identify the lower class limits. b. Identify the upper class limits. c. Identify the class width. d. Identify the class midpoints. e. Identify the class boundaries. f. Identify the number of individuals included in the summary.
The given data represent the number of people from a town, aged 25-64, who subscribe to a certain print magazine. Construct a frequency polygon. Does the graph suggest that the distribution is skewed? If so, how? Age Реople 25-34 53 35-44 238 45-54 743 55-64 687 Construct a frequency polygon using the data. Choose the correct graph below. O A. В. D. Frequency Frequency Frequency Frequency 1000- 1000- 1000- 1000- 0- 25 0 25 65 19.5 69.5 19.5 69.5 65 Age Age Age Age
Among fatal plane crashes that occurred during the past 50 years, 481 were due to pilot error, 99 were due to other human error, 569 were due to weather, 386 were due to mechanical problems, and 256 were due to sabotage. D Construct the relative frequency distribution. What is the most serious threat to aviation safety, and can anything be done about it? Complete the relative frequency distribution below. Relative Cause Frequency % Pilot error Other human error Weather % Mechanical problems % Sabotage (Round to one decimal place as needed.) What is the most serious threat to aviation safety, and can anything be done about it? O A. Mechanical problems are the most serious threat to aviation safety. New planes could be better engineered O B. Weather is the most serious threat to aviation safety. Weather monitoring systems could be improved. O C. Sabotage is the most serious threat to aviation safety. Airport security could be increased. O D. Pilot error is the most serious threat to…
When μ=19 and σ=6 Find P(12<x<25).
Consider the following frequency table representing the distribution of hours students study for an exam in a week. Determine the class width of each class. Answer Hours Students Study for an Exam in a Week Class 20-28 29-37 38-46 47-55 56-64 Frequency 14 2 12 3 11

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