23/A consumer psychologist asked to test a claim by a swimming school that its instructors could teach the average seven-year-old to swim across an Olympic-sized pool in less than 2 minutes. The psychologist arranged for 9 randomly selected seven-year-old children to take lessons at the school and recorded how long it took each child to swim across a pool at the end of the lessons. The mean time (in seconds) for the 9 children was 110 and the standard deviation was 15. Conduct at test for a single sample using 120 seconds as the "known" population mean and the .05 significance level. What is the research hypothesis? A) The swimming school's instructors can not teach the average seven-vear-old child to swim across an Olympic-sized pool in less than 2 minutes B)The swimming school's instructors can teach the average seven-year-old child to swim across an Olympic-sized pool in more than 2 minutes C)The swimming school's instructors can teach the average seven-year-old child to swim across an Olympic-sized pool in less than 2 minutes D)The swimming school's instructors can teach the average seven-vear-old child to swim across an Olympic-sized pool in a time that is not 2 minutes 24/The most likely way for the results of at test to be presented in a research article for a study with a sample of 24 participants is: A)t(23) is less than .05 B) t(24) is significant C)t(23) - 2.94, ps.05 D) t(24) = 3.01, p<.05