Atextile engineer is interested whether the variation in breaking strength of yarn type a is larger than the variation in type b. random samples of na = nb = 7 measurements were obtained, and the sample variances were s 2 a = 5.0 and s 2 b = 1.25. assuming the two types are normally distributed, do the data provide sufficient evidence to conclude σ 2 a > σ2 b ? infer by using α = 0.05.

bru

step-by-step explanation:

step-by-step explanation:

use pothagarean therom

a^2+b^2=c^2 so first ac

acm is a right triangle because c= 90°

and am (the hypotenuse or c) =16+9 =25

but there is not enough info we need another angle or side length

geometry: triangles

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call the larger triangle abc

then the smaller triangle cde is similar to abc (all angles are equal, aaa).  

ab is the side that is 36, and we wish to find de, the side corresponding to ab

area_cde = area_abc - area_cde --> area_abc / area_cde = 2

let x=length of de

ratio of areas = (ratio of sides)^2

+2+=+%2836%2fx%29%5e2+

+2+=+1296%2fx%5e2+

++x%5e2+=+1296%2f2+=+648+

25.45584

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step-by-step explanation: