Determine the type of bias involved. An agricultural scientist wants to determine the effect of fertilizer type on the yield of tomatoes. The scientist sent questionnaires to 100 tomato growers. The type of fertilizer did not significantly affect the yield according to the 15 growers who responded. The primary type of bias involved in the given information is (Choose one) bias.

Cuál es la probabilidad de obtener 2 sellos en el lanzamiento de 3 monedas: A. \( 1 / 8 \) B. \( 3 / 8 \) C. \( 2 / 5 \) D. \( 5 / 8 \)

APPLYING THE MATHEMATICS 13. Al budgets \( \$ 100 \) for lunches during a month, and he estimates that each lunch costs \( \$ 5 \). a. After he has purchased \( x \) lunches, how much money does he have left? b. Let \( y \) be the amount of money he has left after he has purchased \( x \) lunches. Graph the relationship between \( y \) and \( x \). c. Use your graph to determine how many luches he can purchase and have at least \( \$ 20 \) left for a nice dinner. d. What inequality can be solved to give the answer to Part c?

Find the Following matrices where \( A=\left[\begin{array}{cc}6 & -7 \\ -4 & 6 \\ -1 & 4\end{array}\right] \) and \( B=\left[\begin{array}{cc}-9 & 8 \\ 3 & 0 \\ -3 & 8\end{array}\right] \) Select the correct chace below O. A \( -3 A-9 B=\square \) simplify your answer 0 B. This matrix operation is not passible. O.

Find the magnitude of the vector sum Vector \( A \) is 2.84 m long in a \( 23.4^{\circ} \) direction Vector \( B \) is 1.72 m long in a \( 14.5^{\circ} \) direction.

2 Resolver: \( 3 x-5 y=9,3 x-y=-3 \), a través del método de reducción * \( x=-3, y=-2 \) \( x=-2, y=-3 \) \( x=-2, y=3 \) \( x=3, y=-2 \)