Rference:

You decide to reproduce this study with a random sample of 101 meerkats. You have recordings of a familiar call and an unfamiliar call to these meerkats. You play the call from opposite sides of the meerkat within a three second span and record the length of the pause the meerkat takes after. A longer pause will indicate "confusion" since the meerkat recognized the call. Each meerkat hears the familiar and the unfamiliar calls, and the length of the pause is recorded. n Mean (x) SD (s) Familiar 101 7.9 2.2 Unfamiliar 101 4.5 2.5 Difference (Familiar-Unfamiliar) 101 3.4 4.8 a) Is there evidence of a difference in the length of the pause after hearing a familiar versus an unfamiliar call? Use an a-level of 0.10. (Write all steps of the test including hypotheses, test statistics, find and interpret p-value, and conclusion) b) Construct a 99% confidence interval for the mean difference in the length of the pause after hearing a familiar versus an unfamiliar call. Interpret the interval.The meerkat uses its tail to balance when standing upright. They often stand up in the morning to absorb heat on their bellies after a long cold desert night. You take a random sample of 51 meerkats and record how long they "lounge" warming their bellies in the morning. During summer months you find the mean lounging time to be 25 minutes with a standard deviation of 8 minutes. You know from previous research that meerkats lounge for an average of 29 minutes during the colder winter months