6.52 internal revenue service

Project Description:

the mean time to down load the home page for the internal revenueservice is 0.8 seconds. suppose that the download time is normally distibuted, with a standard deviation of 0.2 seconds. what is the probability that a download time is:

1) less than 1 second?

2) between 0.5 and 1.5 seconds?

3) above 0.5 seconds?

4) above how many seconds are 99% of the down loaded times?

5) 95% of the downloaded times are between what two values, symmetrically distributed around the mean?
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