In a study, Phoenix Marketing International identified Bridgeport, Connecticut; San Jose, California; Washington, DC; and Lexington Park, Maryland, as the four U. S. cities with the highest percentage of millionaires (Kiplinger website). Consider a sample of data that show the following number of millionaires for samples of individuals from each of the four cities. City
Bridgeport, San Jose, Washington, Lexington Park
Millionaire CT CA D. C. MD
Yes 42 33 35 32
No 458 267 365 368

Required:
a. What is the estimate of the percentage of millionaires in each of these cities (to 1 decimal)?
b. b. Using α= 0.05 level of significance, test for the equality Of the population proportion of millionaires for these four cities. What is the p-value? Compute the value of the x^2 test statistic (to 3 decimals).

answer: a video game has three difficulty levels: easy, medium, and expert. the game's scoring works in such a way that a player has to score a fixed number of points to advance to the next level, and then the scoring starts over. the total score needed to clear all three difficulty levels is 7,500. two times the number of points needed to clear the easy level is 500 more than the number of points needed to clear the medium level. twice the number of points needed to clear the medium difficulty level is 1,500 more than the number of points needed to clear the expert level. if x, y, and z represent the easy, medium, and expert levels, respectively, and a is the coefficient matrix of the system of equations modeling this situation, identify the inverse matrix, a-1, and the solution matrix, x, of the system of equations.

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step-by-step explanation:

multiply then divide

step-by-step explanation:

using pemdas, (order of operations) you'll see the answer is 24.