If the sample size is n = 75, what are the degrees of freedom for the appropriate chi-square distribution when testing for indep
endence of two variables each with three categories?a. 2.b. 74.c. 4.d. 69
1 answer:
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Donald earns $23 each weekend and Mickey earns $30.
Step-by-step explanation:
Given,
Money earned by Mickey and Donald = $53
Let,
Share of Mickey = x
Share of Donald = y
According to given statement;
x+y=53 Eqn 1
x = y+7 Eqn 2
Putting value of x from Eqn 2 in Eqn 1
Dividing both sides by 2
Putting y=23 in Eqn 2
Donald earns $23 each weekend and Mickey earns $30.
Keywords: linear equation, substitution method
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