In a Survey of 550 Randomly-Selected Business Statistic Students Were

In a survey of 550 randomly-selected business statistic students were surveyed on their impressions of their course, instructor, and textbook. The results are as follows:
$\begin{array} { ll l } \text {Rate the overall quality of your course. } \\&\text { Excellent } & 154 \\&\text { Good } & 187 \\&\text { Fair } & 71 \\&\text { Poor } & 138\\ \text { How effective was your instructor?} \\&\text { Very effective } & 75 \\&\text { Somewhat effective } & 220 \\&\text { Somewhat ineffective } & 155 \\&\text { Very ineffective } & 100\\ \text {How easy was it to read and understand the textbook? } \\&\text { Very easy } & 21 \\&\text { Easy } & 83 \\&\text { Hard } & 361 \\&\text { Very hard } & 85\end{array}$

Use the above results to answer the following questions:
Compute a point estimate of the proportion of all college statistic students who:

-Of the students who thought their textbook was very hard to read,50 also thought that the quality of the course was "poor".What proportion of students who think that their textbook was "hard" also thought their course was "poor".

A) 0.588
B) 0.155
C) 0.091
D) 0.251
E) 0.616