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Coursepack, p. 50 MAT 133: 3.3 WS 2 p.2 3. The Insurance Institute for Highway Safety has access to the records for all the fatal
Coursepack, p. 50 MAT 133: 3.3 WS 2 p.2 3. The Insurance Institute for Highway Safety has access to the records for all the fatal motor vehicle crashes in the U.S. for 2019 and reports the following age-related information. (Source) Drivers in Fatal Motor Vehicle Crashes by Age (in years) for 2019 Class Midpoints Frequency Relative Age Group Cumulative Cumulative Frequency Frequency Relative Frequency 15-24 3482 25-34 10507 35-44 830 45-54 7532 55-64 7166 65-74 4404 Over 74 3229 a) Compute the class midpoints, relative, cumulative, and cumulative relative frequencies and place them in the table (Give 3 decimal places where necessary) and place them in the table. b) What is the total number of fatal crashes in 2019? c) What is the lower class limit of the 4th class? d) What appears to be the shape of this distribution? e) We can treat this distribution as coming from a population. Explain why. f) What percentage of fatal crashes had drivers between 55 and 64? g) How many fatal crashes had drivers less than 35 years old? h) What is the modal class of the distribution? Explain what the modal class means for auto insurance rates. (2 decimal ) Find the mean and standard deviation places) of this distribution. Interpret their values in the context of the situation (Include units!)
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