Sample a and sample b are from the same population. if the sample proportion for sample a is 0.53, the sample proportion for sample b doesn't have to be 0.53. true or false?

true

Step-by-step explanation:

just took it apex

Answer with explanation:

It is given that, Sample A and sample B are from the same population.

U= Whole Population

U= Sample A + Sample B

→Sample A + Sample B = 1

Sample A= 0.53

Sample B = 1 - 0.53

         = 0.47

So, Sample B ,doesn't have to be 0.53 is , True Statement.

→→→True

- 2 + 10x³ - 21x² + 19x - 4

step-by-step explanation:

each term in the second factor is multiplied by each term in the first factor

x²(- 2x² + 4x - 1) - 3x(- 2x² + 4x - 1) + 4(- 2x² + 4x - 1) ← distribute

= - 2 + 4x³ - x² + 6x³ - 12x² + 3x -8x² + 16x - 4

collect like terms

= - 2 + 10x³ - 21x² + 19x - 4 ← in standard form

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step-by-step explanation:

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