1. Studies show that 27% of all students at Richardson Technical College smoke. Suppose we are interested in the proportion of the 85 students in the lunchroom cafeteria that smoke. (a) Is the normal approximation to the proportion = r / n valid? Explain.

(b) What is the probability that the proportion of those in the cafeteria who smoke is at least one fourth?

(c) What is the probability that the proportion of those in the cafeteria who smoke is no more than 30%?

360 different combinations

∠lno ≅ ∠lnm

∠oln ≅ ∠mln

step-by-step explanation:

given   that triangle lno is congruent to triangle lnm.

we have to fill up the blanks in the given question.

according to above order of congruency   kept in mind we can say that

∠lno ≅ ∠lnm

∠oln ≅ ∠mln

ln ≅ ln due to common in both.

hence, by sas congruency,

the side angle side rule   states that if two sides and the included angle of one triangle are congruent to another triangle, then these two triangles are congruent.

-2 is the right