She is about 7.8 miles from where she had started and I used a right angle triangle for this and applied Pythagorean theorem: a^2+b^2=c^2
Answer:
Paired difference t test
Step-by-step explanation:
The paired difference t test is a type of statistical test which is used to examine if difference exists in th population mean of two samples. The paired difference test usually involves samples taken within subjects. That is, the sample mean for each set of measurement is taken from the Same subject, In the scenario described above, the subjects which are the 6 veteran runners each wore each of the two shoe brands, this means that two readings were produced by each runner ; one reading for brand A and the other brand B.
The difference between the two readings are taken for each runner and used to perform a hypothesis test:
t = μd/ (s/√n)
s = sample standard deviation ; n = sample size ; μd = mean difference
Yo sup??
For our convenience let h=x+1
therefore
when x tends to -1, h tends to 0
hence we can rewrite it as

This inequality is of the form 1∞
We will now apply the formula

plugging in the values of g(x) and f(x)

express coth² as cosh²/sinh² and also write cosh-1 as 2sin²(h/2)
(by applying the property that cos2x=1-sin²x)
After this multiply the numerator and denominator with h² so that we can apply the property that

Now your equation will look like this.

We will now apply the result

where x=h²
we get

we now multiply the numerator and denominator with 4 so that we can say



Apply the limits and you will get


Hope this helps.