3:01 PM Tue Mar 7Help Using WAMAPRate of Wearing a HelmetHelmets and lunches. The scatterplot shows the relationship between socioeconomic status measured as the percentage of children in a neighborhood receiving reduced-feelunches at school (lunch) and the percentage of bike riders in the neighborhood wearing helmets (helmet). The average percentage of children receiving reduced-fee lunchesis 30.8% with a standard deviation of 26.7% and the average percentage of bike riders wearing helmets is 38.8% with a standard deviation of 16.9%.60%40%20%wamap.org0%A 52%0%20% 40% 60% 80%Rate of Receiving a Reduced-Fee Lunch(a) If the R² for the least-squares regression line for these data is 72%, 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 0% reduced-fee lunches and 40% of the bike riders wear helmets? Interpretthe meaning of this residual in the context of the application.

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Answered: Helmets and lunches. The scatterplot…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The average McDonald's restaurant generates $3.6 million in sales each year with a standard deviation of 0.9. Trent wants to know if the average sales generated by McDonald's restaurants in Kentucky is different than the worldwide average. He surveys 27 restaurants in Kentucky and finds the following data (in millions of dollars): 4.1, 2.8, 4.4, 4.5, 5.3, 5, 3.7, 2.9, 3.8, 4.8, 3.6, 2.3, 3.7, 2.9, 2.9, 4, 1.1, 5.2, 2.9, 5, 4, 4, 5.9, 3.2, 2.2, 4.3, 3.8 Perform a hypothesis test using a 3% level of significance. Step 1: State the null and alternative hypotheses. Ho: [? v] ? v На: ? ? v (So we will be performing a Select an answer test.) Step 2: Assuming the null hypothesis is true, determine the features of the distribution of point estimates using the Central Limit Theorem. By the Central Limit Theorem, we know that the point estimates are Select an answer v with distribution mean and distribution standard deviation Step 3: Find the p-value of the point estimate. P( ? v ? v = P( ? ♥ ?…
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