The following times between keystrokes were recorded when a user typed the username and password: .23,...

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.

Solutions

Expert Solution

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:-

*** if you have any doubt regarding the problem ,please write it in the comment box...if satisfied,please UPVOTE.

orchestra answered 1 year ago

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