A data set consists of the following data points: \[ (2,4),(4,7),(5,12) \] The line of best fit has the equation \( y=2.5 x-1.5 \). What does this equation predict for a value of \( x=7 \) ? A. 19 B. 17.5 C. 16 D. 20.5

\( 1 \leftarrow \quad \begin{array}{l}\text { A sample of } 100 \text { randomly selected registered voters in a city was asked their political affiliation: Democrat (D), } \\ \text { Republican }(R) \text {, or Independent (I). The results of the survey are available below. Complete parts (a) through (e) } \\ \text { below. }\end{array} \)

Sea \( X \) una variable aleatoria con \( N(10,5) \), para que valor de \( x \) se cumple la siguiente probabilidad. \( P(X<x)=0.975 \)

b) Si \( r 2=0.65, r=0.806, p=.001 \), ¿Cuál es la variabilidad explicada por el modelo de regresión? Describe la magnitud de la relación

Variance of 1,3,5,7,9.

Find the standard deviation for each data set. Use the standard deviations to compare the pair of data sets. fastest recorded speeds of various large wild cats (miles per hour): \( 65 \quad 5030 \quad 35 \quad 4040 \quad 30 \quad 35 \quad 20 \) fasted recorded speeds of various birds in flight (miles per hour): \( 218 \quad 103 \quad 9659673750 \quad 3250202030 \)