QUESTION 4 Over the past few decades, public health officials have examined the link between weight concerns and teen girls' smoking Researchers surveyed a group of 273 randomly selected teen girls living in Massachusetts (between 12 and 15 years old). After four years the girls were surveyed again. Sixty-three said they smoked to stay thin. Is there good evidence that more than thirty percent of the teen girls smoke to stay thin? The alternative hypothesis is: O p0.30 QUESTION 5 A statistics instructor believes that at least 20% of Evergreen Valley College (EVC) students attended the opening night midnight showing of the latest Harry Potter movie. She surveys 84 of her students and finds that 11 attended the midnight showing. An appropriate null hypothesis is: O p 20.20 O p>0.20 O p