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1. Researchers asked a group of adolescents aged 3-15 the following question: “On a scale of 0-3, with 0 being the worst and 3 being the best, how much do you like unicorn giggles?” Their responses are stratified by age group in the table below. “0” “1” “2” “3” 3-7 years old 5 2 15 23 8-12 years old 20 15 2 14 13-15 years old 2 0 5 29 Test whether their responses are independent of age group at the α = 0.05 level of significance. (a) State the null and alternative hypotheses, and use StatCrunch to calculate the P-value. Write down the steps you take in StatCrunch as well as any statistics for which StatCrunch prompts you. (b) State your decision (with appropriate reasoning), and write a thorough conclusion
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