The second angle of a triangular field is three times as large as the first angle. the third angle is 40⁰ greater than the first
1 answer:
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Answer:
Step-by-step explanation:
The square root property requires a quantity squared by itself on one side of the equation. The only quantity squared is x, so divide both sides by 2 before applying the square root property.
The x variable should be isolated on one side of the equation. The x variable is squared so before performing the square root property where we take the square root of both sides, we divide both sides by 2, then take the square root of both sides.
Dividing both sides by 2.
Taking the square root of both sides.
Answer:
The Upper Bound of the 99% confidence interval about the mean number of orcs per raiding party is of 106.83 orcs per party.
Step-by-step explanation:
We have the standard deviation of the sample, so we use the t-distribution to solve this question.
The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So
df = 13 - 1 = 12
99% confidence interval
Now, we have to find a value of T, which is found looking at the t table, with 12 degrees of freedom(y-axis) and a confidence level of . So we have T = 3.0545
The margin of error is:
M = T*s = 3.0545*7.8 = 23.83
In which s is the standard deviation of the sample.
The upper end of the interval is the sample mean added to M. So it is 83 + 23.83 = 106.83 orcs per party.
The Upper Bound of the 99% confidence interval about the mean number of orcs per raiding party is of 106.83 orcs per party.