21.9 A student survey. Tonya wants to estimate the proportion of the students in her dormitory like the dorm food. She interviews an SRS of 50 of the 175 students living in the dormitory. She finds that 14 think the dorm food is good. a. What population does Tonya want to draw conclusions about? b. In your own words, what is the population proportion p in this setting? c. What is the numerical value of the sample proportion p^ from Tonya's sample? 3b) 21.35 Averages versus individuals. Scores on the ACT college entrance examination vary Normally with mean =18 and standard deviation =6. The range of reported scores is 1 to 36. a. What range contains the middle 95% of all individual scores? b. If the ACT scores of 50 randomly selected students are averaged, what range contains the middle 95% of the averages x