P=7+7+12+12P=14+24P=38
See the attachment for diagram
See the attachment for diagram
Simplify the polynomial, then evaluate for x=-3 -x^2+2x-2x^2-3x+4+x^2
1 answer:
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We are given the following data:
Sample Size = n = 1000
Sample Mean = u = 15 hours
Population Standard Deviation = s = 2 hours
Since we know the population standard deviation, we can use z distribution to find the confidence interval about the mean. z value for 95% confidence interval is 1.96.
Formula for the confidence interval is:
Using the values in the formula, we get:
Therefore, the 95% confidence interval about the population mean is 14.88 hours to 15.12 hours. So B option is the correct answer.
Slope = -2/1
work is provided in the image attached.
