2. Draw Conclusions Germany's offensives in the spring of 1918 were engineered by German General Erich Ludendorff. Before the campaign began, he made this statement: We must strike at the earliest moment before the Americans can throw strong forces into the scale.'What conclusions can you draw from Ludendorff's statement?

2.) Calcule a) \( \left(-x^{2}+2 x+4 x\right)^{2}-\left(-x^{2}+5 x\right)^{2} \)

f) \( y=\log _{8}(x)-2 \)

Consider the hypotheses: \( H_{0}: \mu=75 \) against \( H_{1}: \mu<75 \). Assume that a random sample of 100 observations yielded a sample mean of 70 and that the population standard deviation is 30 . The \( p \)-value of the test is

Simplify the following expression. \( -\sqrt{\frac{64}{9}} \) \( -\sqrt{\frac{64}{9}}=\square \) (Type an integer or a simplified fraction.)

In un rettangolo il perimetro è di 40 cm e l'al terra èil triplo della base. Calcola la lunghezz detle due dimensioni. \( \quad \) [ 5 cm ; 15 cm