What's better, faster or slower? For mobile phone users, data download speed is perhaps the most important characteristic of an LTE network. Faster transmission rates mean web pages, songs, and videos download faster.
According to OpenSignal, the mean download speed in the United States was 9.6 Mbps. Suppose the standard deviation is 2.3 Mbps and the distribution of download speeds is approximately normal.
Wireless customers will begin to complain and even switch providers if they notice a significant decrease in download speeds. Find the industry-wide complaint download speed, s, such that 2% of all download speeds are less than s.