? Give me a picture please...
Answer:
24
Step-by-step explanation:
n/54 = 4/9 Multiply both sides of the equation by 54
(n/54)*54 = (4/9) * 54 Divide both sides by 9
x = 216/9 Do the division
x = 24
<span><u><em>The correct answer is: </em></u>
C) isolating a variable in one of the equations.
<u><em>Explanation</em></u><span><u><em>: </em></u>
In order to solve a system of equations using substitution, we must have one of the variables isolated; this is the only way we have something to substitute. If one of the variables is not already isolated, that must be our first step.</span></span>
Answer:
H_0: p_1 =p_2\\H_a: p_1<p_2
Step-by-step explanation:
Given that in the past, 25% of the town residents participated in the school board elections.
The town officials recently undertook an extensive campaign to encourage registered voters to participate in the election process. They are interested in determining whether the promotional campaign actually increased the proportion of voters.
Let p1 be the proportion before camaign and p2 after campaign for voters.
Hence the correct set of hypotheses would be
(Left tailed test for comparison of proportins)