A asked of friends if they thought the new Brand X that developed was effective. responded​ "yes." The used the results to write a TV advertisement claiming that ​" out of s prefer Brand X ​." Is this a valid​ inference? Explain. Use pencil and paper. Explain all of the factors that are necessary for an inference to be valid.
Is the inference​ valid? Explain. Choose the correct answer below.
A.
​Yes, because s said yes out of who were asked.
B.
​No, because s said yes out of who were asked.
C.
​No, because the s asked are not a representative sample of the population of s.
D.
​Yes, because the s asked are a representative sample of the population of

please help me

What values of data might affect the statistical measures of spread and center

Suppose a man is heterozygous for heterochromia, an autosomal dominant disorder which causes two different‑colored eyes in an individual, produced 25‑offspring with his normal‑eyed wife. of their children, 15 were heterochromatic and 10 were‑normal. calculate the chi‑square value for this observation.

Use addition and subtraction to simplify the following polynomials. a. add polynomials: (3 – 4x + 8x^2) + (–6 + 2x – 5x^2) step 1: rewrite the polynomials without the parentheses. step 2: write the polynomial in descending order and use parentheses around like terms. step 3: add the like terms identified in step 2 to simplify the polynomial. b. subtract polynomials: (3x – 5 – 7x^2) – (–2 + 6x^2 – 5x) step 1: rewrite the polynomials without the parentheses. remember to multiply each term in the second parentheses by –1. show your work. step 2: write the polynomial in descending order and use parentheses around like terms. step 3: add the like terms identified in step 2 to simplify the polynomial.