SOLUTION: Please show all work. Include formulas, calculations, or definitions necessary to solve the problems. I recommend that you use Excel. You may also use Word, but must attach the

Question 855891: Please show all work. Include formulas, calculations, or definitions necessary to solve the problems. I recommend that you use Excel. You may also use Word, but must attach the Excel workbook used for calculations or paste the work in the document. Feel free to ask me questions in a Private Message before the due date.
1) A consumer advocacy group wants to determine whether there is a (statistically significant) difference between the proportions of the two leading automobile models that need major repairs within 2 years of purchase. A major repair is defined as �more than $500.�
A sample of 520 owners of the Model A is contacted, and 85 owners indicated that their vehicles needed major repairs within 2 years. A sample of 610 owners of Model B is contacted, and 108 owners indicated that their vehicles needed major repairs within 2 years.
Test the null hypothesis that no difference exists between the proportions in populations A and B needing major repairs against the alternative hypothesis that a difference does exist. Use a = 0.01.

Answer by mx34(1) (Show Source): You can put this solution on YOUR website!

RELATED QUESTIONS
Show that x-1 either is or is not a factor of P(x) = 2x^4 +3x^3 - 12x^2 -7x +6. Could... (answered by Alan3354)

Can u please show me hwo to solve just some of these problems that I had listed. Thank... (answered by lyra)

Use the Remainder Theorem to find P(-3) if P(x)= -2x^3+ x^2 -2x +11. Could you please... (answered by josgarithmetic,MathTherapy)

Algebra formulas help please, I have to create a formula. Option 1: Find a formula... (answered by josgarithmetic)

Find the real solutions of 4x^3 - 25x^2 + 6x=0. Could you please show me all the work... (answered by ankor@dixie-net.com)

I need help figuring out how to work these problems. I will only submit one, and maybe... (answered by solver91311)

Draw the letter “W” on your axes, wherever you want on the coordinate system. You can (answered by Edwin McCravy,AnlytcPhil)

I need help. I do not understand any of this. I need to build or generate at least... (answered by richwmiller,ankor@dixie-net.com)

Directions: Use the compound interest formulas A=P(1+r/n )^nt and A=pe^rt to solve. (answered by solver91311)