2. NWIIi \( A= \)

\( 5\left(\frac{1}{3}\right)^{3}-\frac{5}{9}=\square \) (Type an integer or a simplified fraction.)

Values that are more than two but less than three standard deviations from the mean are considered conventional values

2 a) Para la siguiente función, calcular su forma factorizada, sus raíces y sus intervalos de positividad y de negatividad. \( f(x)=2 x^{4}+8 x^{3}-6 x^{2}-20 x+16 \)

uál es el valor de la integral definida \( \int_{\sqrt{\frac{\pi}{4}}}^{\sqrt{\frac{\pi}{2}}} x \csc \left(x^{2}\right) \cot \left(x^{2}\right) d x \) ?

A sample of scores from a research study examining stress in the workplace has a mean of and a standard deviation of 2.3 . John has scored a 6.2 in his stress survey. What is John's Z score for the survey?