Using the textbook data set nlschools.csv, perform a hypothesis test to determine whether the proportion of students with langua
ge test scores greater than 37 is different for students from families of social-economic status at most 25 and students from families of social-economic status greater than 25. Perform the test at the α = 0.05 significance level.
1 answer:
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Answer:
(x, y) = (-2, -1) or (2, 1)
Step-by-step explanation:
Substitute for x in the first equation:
(2y)^2 +3(2y)y = 10
10y^2 = 10
y^2 = 1
y = ±1
x = 2y = ±2
Solutions are (x, y) = (-2, -1) or (2, 1).
