Statistics Midterm Review 4) Given the regression equation y = 15.6-4.3x, what i

Question

Statistics Midterm Review 4) Given the regression equation y = 15.6-4.3x, what is the residual for the point 2017-2018 5) Given the table of values regarding the capacity of certain formal dining restaurants versus the number of parking spaces needed, answer the following: Capacity of ppl 84 120 100 93 50 75 70 64 A: Find the least squares regression equation. B: Interpret the slope and y-intercept C: Find r and r2 from the calculator 1) A poll is being taking of a sample of 500 adults on what brand of toothpaste they i) Calculate the margin of error for a sample of this size. ii) How would the margin of error change if the sample were increased to 800? 2) Out of a student body of 256 seniors, the class president is to randomly select 20 seniors to represent the school at a county fundraiser. Use the following line from the table of random digits: 07511 88915 41267 16853 84569 79367 32337 03316 ) Explain how to label your students ii) Use the line above to select the first three students. State their numbers 3) Consider a survey where 74% of a sample of 1,375 American college students said yes they were apart of a study group. Write a 95% confidence statement for the proportion all American college students.

Explanation / Answer

SOlving the first question only, please repost the others individually.

For the point x =3 and yactual = 4.1

Ycalculated from equation = 15.6 - 4.3* 3 = 15.6-12.9 = 2.7

Residual = Yactual - Ycalculated = 4.1-2.7=1.4

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