The speed at which you can log into a website through a smartphone is an important quality charactersitc of that website. In a recent test, the mean time to log into the Hertz website through a smartphone was 7.524 seconds. (Data extracted from N. Trejos, Travelers Have No Patience for Slow Mobile Sites," USA Today, April 4, 2012, p. 3B) Suppose that the download time is normally distributed, with a standard deviation of 1.7 seconds. What is the probability that a download time is
less than 2 seconds?
between 1.5 and 2.5 seconds?
above 1.8 seconds?
99% of the download times are slower than how many seconds?