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GHA 1 sol - STT 200 Summer A Graded HA#1 SOLUTIONS Male Bus...

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STT 200 Summer A Graded HA #1 SOLUTIONS 1. In order to plan transportation and parking needs at a private high school, administrators asked students how they get to school. Some rode a school bus, some rode in with parents or friends, and others used “personal” transportation – bikes, skateboards, or just walked. The table summarizes the responses from boys and girls. A. [3] Find each percent. a) What percent of the students are girls who ride the bus? 34/188 = 18% b) What percent of the girls ride the bus? 34/102 = 33% c) What percent of the bus riders are girls? 34/64 = 53% B. [7] Compute a conditional distribution of Transportation mode for Male and Female students separately (percentages of column), and create a segmented bar graph comparing them. Male Female Bus 34.9% 33.3% Ride 43.0% 44.1% Personal 22.1% 22.5% Total 100.0% 100.0% Male Female Total Bus 30 34 64 Ride 37 45 82 Personal 19 23 42 Total 86 102 188 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% Male Female Personal Ride Bus

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2. Postmortem interval (PMI) is defined as the elapsed time between death and an autopsy.
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