Assignment:
Search be quality control manager of a water bottles company. One of the biggest complaints in the has been the breakage and, hence, the concen on the durability of the connector between and the bottle which many users use as a handle for the bottles. To collect evidence before to durability test and the following data on the number of times the handles have been used to any modification to the production process, y our department has subjected 50 water the bottles before they break are contained in the file attached. From the data file, we find
n=50, x¯=500.04, and s=10.
a. Use a 99% confidence interval to estimate the mean number of times the handles have been used to lift the bottles before they break.
b. What is the probability that 490 times a bottle's handles have been used to lift before it breaks?