(Sample Statistics) Is the sample excess kurtosis is scale invariant? That is, for a random sample {Xi} n i=1, is it true that g X 2 = g Y 2 , where, ∀i ∈ {1, . . . , n}, Yi = bXi , 1 b ∈ R. Explain your answers. (Hint: remember that g X 2 = n −1 Pn i=1 Xi − X¯ 4 (sX) 4 − 3, where sX is the sample standard deviation of X.

you never say the total so we cant find the percentage used for petrol

step-by-step explanation:

step-by-step explanation:

assume that you have 3 different side lengths.   apply the pythagorean theorem here:   square each of the two shortest sides; call them a and b, so that their squares are a² and b².   also square the longest side, calling the result c².

now, if a² + b² = c² is true, the triangle is a right triangle; otherwise it is not a right triangle.

step-by-step explanation:

tangent z: 4/3

cosine y: 4/5

cotangent y: 4/3