Answer:
8x^2-1
Step-by-step explanation:
8x^2-x+4+x-5=8x^2-x+x+4-5=8x^2+4-5=8x^2-1
Step-by-step explanation:
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Answer:
The answer to your question is: y = 1/4x - 5
Step-by-step explanation:
Data
slope = m = 1/4
Point (0, - 5)
Formula
(y - y1) = m(x - x1)
Substitution
(y + 5) = 1/4 ( x - 0)
Simplification
(y + 5) = 1/4 (x)
y = 1/4x - 5 Result
Answer:
The 95% CI is (6.93% , 7.47%)
The 99% CI is (6.85% , 7.55%)
Step-by-step explanation:
We have to estimate two confidence intervals (95% and 99%) for the population mean 30-year fixed mortgage rate.
We know that the population standard deviation is 0.7%.
The sample mean is 7.2%. The sample size is n=26.
The z-score for a 95% CI is z=1.96 and for a 99% CI is z=2.58.
The margin of error for a 95% CI is
Then, the upper and lower bounds are:
Then, the 95% CI is
The margin of error for a 99% CI is
Then, the upper and lower bounds are:
Then, the 99% CI is