21.4 A student survey. Tonya wants to estimate what 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 sample proportion? d) Find a 90% confidence interval for p.