Mathematics, 06.05.2020 01:57, beto66
The scatterplot shows the relationship between socioeconomic status measured as the percentage of children in a neighborhood receiving reduced-fee lunches at school (lunch) and the percentage of bike riders in the neighborhood wearing helmets (helmet). The average percentage of children receiving reduced-fee lunches is 30.6% with a standard deviation of 26.7% and the average percentage of bike riders wearing helmets is 38.8% with a standard deviation of 16.7% (a) If the R2 for the least-squares regression line for these data is 73%, what is the correlation between lunch and helmet?(b) Calculate the slope and intercept for the least-squares regression line for these data. (c) Interpret the intercept of the least-squares regression line in the context of the application.(d) Interpret the slope of the least-squares regression line in the context of the application. (e) What would the value of the residual be for a neighborhood where 40% of the children receive reduced-fee lunches and 40% of the bike riders wear helmets?(f) Interpret the meaning of this residual in the context of the application.
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The scatterplot shows the relationship between socioeconomic status measured as the percentage of ch...
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