91影视

The given data is

We have to use the formula of probability:

$\text{Probability}\left(p\right)=\frac{\text{Number of favourable}}{\text{Total number of exhaustive}}$

For each group of parents, the conditional distribution of response can be determined as follows:

role="math" $$\begin{gathered} \mathrm{P}(E鈭�B)=\frac{\frac{\mathrm{n}(E鈭�N)}{n}}{\frac{n\left(B\right)}{n}} \\ =\frac{12}{202} \\ =0.0594 \end{gathered}$$

We may carry out this technique in the same way for all of them.

The given data is

Let's make a comparison histogram.

The conditional probability computed in the exercise $28$must have the same width and height for all bars.

The given data is

From Part 2 of the graph (b)

The majority of parents have a favourable or balanced assessment of their children's high schools.

Hispanic parents believe that high school is the best and that they know the least.

In each category, the proportion of Poor opinions is nearly the same.