Discussion:
Q: A journal article reports that a sample of size 5 was used as a basis for calculating a 95% confidence interval for the true average natural frequency (Hz) of delaminated beams of a certain type. The resulting interval was [216.3, 217.8]
You decide that a confidence level of 99% is more appropriate than the 95% level used.
a) What is the lower limits of the 99% interval? Give your answers to three decimal places.
b) What is the upper limit of the 99% interval? Give your answers to three decimal places