Critical Numbers What are critical numbers and how do you use a derivative to find them?

Elercicio 1 [1'5 puntos] Calcua: a) \( \lim _{x \rightarrow 2} \frac{x^{2}-5 x+6}{x-2} \)

3. Random samples of size 225 are drawn from a population with mean 100 and standard deviation 20 . Find the mean and standard deviation of the sample mean. [Ans \( \left.\mu_{\bar{x}}=100 ; \sigma_{\bar{x}}=1.33\right] \)

Health and well-being of children is affected by community resources, such as quality child care and education facilities and neighborhood parks. True False

equation \( y=m x+c, p d f \) 3. Expresw with -2 slope of the line; \( \begin{array}{lll}\text { (i) } x+y-4=0 & \text { (ii) } 3 x+y-5=0 & \text { (iii) } 2 x+3 y-7=0\end{array} \)

Which of the following is a plausible correlation for a person's height and age from birth to age 10 ? -0.89 0.89 0.0