In a school district with 10,000 high school students, 1200 randomly selected students completed a class designed to improve their math skills. 708 of these students scored better than the district-wide median on a standardized math exam. The district would like to know whether the class improves the students' math skills. The hypotheses are where p is the proportion of all those taking the special class who score better than the median.

Use the following statements to write a compound statement for the conjunction or disjunction. then find its truth value. p: an isosceles triangle has two congruent sides. q: a right angle measures 90° r: four points are always coplanar. s: a decagon has 12 sides. a) a right angle measures 90° or an isosceles triangle has two congruent sides; true. b) a right angle measures 90° and an isosceles triangle has two congruent sides; true. c) a right angle measures 90° and an isosceles triangle does not have two congruent sides; false. d) a right angle measures 90° or an isosceles triangle does not have two congruent sides; true.