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17. The Sleep Foundation recommends that school age children (6-13 years old) get between 9 and 11 hours of sleep while teenagers (14-17 years old) get between 8 and 10 hours of sleep. Suppose we take a random sample of ten school age children and ten teenagers. Their sleep times are recorded and provided below. 910 School age 7.9 8.4 9.2 9.3 9.9 10.1 10.4 10.5 11.1 11.1 Teenager 6.2 7.9 8.1 8.7 9.2 9.3 9.9 10.5 10.6 10.7 Observation 1 2 345 6 (a) Construct back to back stem and leaf plots for hours of sleep the groups. That is, use the same stem for both groups. Display the leaves for the school age children to the left of the stem and teenagers to the right of the stem (b) Describe the key features of each group. (c) In a few sentences, compare and contrast the sleep distributions for school age children (6-13 years old) and teenagers (14-17 years old)

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oiien table a) Stem and leaf Plo Steam lravs teenage cchool age Chfedken b) The avehage sleep of schol age cktdken 19 and Tha aveotage steep of teenages s . mcan The tuwo skesing the avesoge sleep or school oge Childven is greate than ta averoge sleep of tho n00 teenage school aqe chtidsen s belt shaped Tho Stsope of the dftvlbutfon fol feenages chicken s, Skewed shaped, Tòaosds lul

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