In Exercises 50-80, identify the class width, class midpoints, and class boundaries for the given frequency distribution. Also identify the number of individuals included in the summary. The frequency distributions are based on real data from Appendix Bo. Age (yr) of Best Actress When Oscar Was Won Frequency 5. 20-29 30-39 34 40-49 15 50-59 3 60-69 6 70-79 80-89 31

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