What kind of analysis? Researchers were interested in whether memory performance on a test called the Reversed Digit span was related to the amount of noise in the room. In the reversed digit span test, people are required to shown a list of numbers presented one digit at a time, 1 second per digit, and then required to repeat the digits back in the reverse order. For example, if they were shown 52816 they would have to repeat back 61825. In the population, people can recall 5 digits. A group of 48 were tested in a noisy place (a factory where the average decibel level was 80 db). On average they recalled 4.2 digits with a standard deviation of 1.5 digits. If you were to use an inferential statistic, what type would you use? Within subjects (repeated measures) t-test Chi square Analysis of Variance (ANOVA) OSpearman correlation Pearson correlation O az test Between subjects (independent samples) t-test O a one sample t-test