9.

It is believed that 11% of all Americans are left-handed. A college needs to know how many left-handed desks to place in the big lecture halls being constructed on its campus. In a random sample of 320 students from that college, whether or not a student was left-handed was recorded for each student. The college wants to know if the data provide enough evidence to show that students at this college have a lower percentage of left-handers than the general American population? State the random variable, population parameter, and hypotheses. State the Type I and Type II errors in the context of this problem. a) The symbol for the random variable involved in this problem is p What is the best description of the random variable in this context? The percentage of 320 randomly selected students from that college that are left-handed. The percentage of all students from that college that are left-handed. O A randomly selected student from that college. O A randomly selected student from that college that is left-handed 11% of all students from that college are left-handed. Previous (c) Fill in the correct null and alternative hypotheses: Ho: p = V HA: p v SV