Answer:
Step-by-step explanation:
Given : Sample size : n= 33
Critical value for significance level of :
Sample mean :
Standard deviation :
We assume that this is a normal distribution.
Margin of error :
i.e.
Hence, the margin of error is
Answer:
y = 3
Step-by-step explanation:
39 = 13y
y = 3 (explanation: by dividing 13)
Check answer:
39 = 13(3)
39 = 39
Answer: 3/4 or 75%
Step-by-step explanation:
<span>x^2 - 4x - 12 = 0
factors
(x - 6)(x + 2) = 0
</span>Set (x - 6) and (x + 2)<span> equal to </span><span>0</span><span> and solve for </span><span>xx</span>.<span>
x - 6 = 0; x = 6
x + 2 = 0; x = -2
answer
x = -2 or x = 6</span>