A consumer electronics company is comparing the brightness of two different types of picture tubes for use in its television set
s. Tube type A has mean brightness of 100 and standard deviation of 16, and tube type B has unknown mean brightness, but the standard deviation is assumed to be iden- tical to that for type A. A random sample of n = 25 tubes of each type is selected, and XB - Xis computed. If us equals or exceeds ua, the manufacturer would like to adopt type B for use. The observed difference is XB - XA = 3.5. What decis would you make, and why?
1 answer:
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Answer:
d) 2x²(6x³ + 3x + 4)
Step-by-step explanation:
In order to factor the given polynomial, you need to find the greatest common factor of all three terms:
The greatest common factor is '2' and the variable is x². If we factor out 2x² from each term, we get:
2x²(6x³ + 3x + 4)