The mean of the data plot is 7.25.
The mean of the data plot without the outlier is 4.333333333.
So the mean decreased by 2.916666666.
Step-by-step explanation:
A = 2 x 3^4 x 5
B = 2^3 x 3^2 x 5^2
b) Write down the highest common factor (HCF) of A and B.
Well, since the exam creator claims that on the same exam, nine times out of ten, seniors will have an average score within 6% of 80%, that means there is a 90% confidence interval. 9 / 10 = .90 = 90% 90% = 1.645 1.645 * .9 = 1.4805 Margin of Error - 1.4805and The margin of error is the distance from x-bar, the center of the confidence interval ,to the end of the interval. This distance is 6% of 80% which is given by: 80×6100=4.8 Therefore the margin of error is 4.8% and the confidence interval is: ({80 - 4.8}%, {80 + 4.8}%)
The slope is found by the following calculations
1-(-2)=3
-3-6=-9
3/-9=-.3
