Consider the data set in DS 6.6.5 of bamboo shoot heights 40 days after planting. Use a computer package to construct 90%, 95%, and 99% two-sided /-intervals for the mean shoot height. A previous study reported that under similar growing conditions the mean shoot height after 40 days was more than 35 cm. Does the new data set confirm the previous Study? Docs it contradict the previous study?