In: Statistics and Probability
The following times between keystrokes were recorded when a user typed the username and password:
.23, .21, .27, .35, .33, .31, .34, .28, .20, .35, .31, .16, .16, .29, .39, .40, .35, .26 seconds.
Let’s construct a 99% confidence interval for the mean time between keystrokes assuming Normal distribution of these times.
i am using minitab to solve the problem.
steps :-
copy the data in minitab and name the column x stat basic statistics 1-sample T select one or more samples, each in a column from the drop down menu in the blank box below select x options in confidence level type 99 select alternative hypothesis as mean hypothesized mean okok.
*** SOLUTION ***
the 99% confidence interval or the mean time between keystrokes be:-
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