1. When engaging in weight control (fitness/fat burning) types of exercise, a person is expected to attain about 60% of their maximum heart rate. For 20-year-olds, this rate is approximately 120 beats per minute (bpm).A simple random sample of 100 20-year-olds was taken, and the sample mean was found to be 107 bpm with a standard deviation of 45 bpm.

1. *(1 point) What is the (sample estimate for the) standard error of the mean?

1. *(1 point) We are interested in a 95% confidence interval for the 20-year-old population mean bpm (when engaging in weight control types of exercise).What is the margin of error associated with the confidence interval?

1. *(1 point) What is the 95% confidence interval for the 20-year-old population mean bpm based on this data?

1. *(1 point) What is the interpretation of the 95% confidence interval you computed in part C?

1. Is there evidence from this study that the expected bpm is actually lower than 120 bpm?Explain why?