Question

Please show all working out and any reference to tables if used, thank you.

A triathlon consisting of swimming, cycling, and running is one of the more strenuous amateur sporting events. An article reports on a research study involving nine male triathletes. Maximum heart rate (beats/min) was recorded during performance of each of the three events. For swimming, the sample mean and sample standard deviation were 189.0 and 7.2, respectively. Assuming that the heart-rate distribution is approximately normal, construct a 90% CI for true inean heart rate o triathletes while swimming Round your answers to one decin i place beats/min Interpret the resuliting interval. we are 90% confident that the true population mean lies above this interval we are 90% confident that this interval does not contain the true population mean we are 90% confident that this interval contains the true population mean we are 90% confident that the true population mean lies below this interval

Answer 1