WEEK 5 STAT 200 PARTICIPATION TOPIC

Confidence Interval or the lack of it.......

    It is 1581 Anno Domini.  At the Undergraduate School of UMUC, besides Assistant Academic Director of Mathematics and Statistics, I am also the Undergraduate School-appointed CPA, Coffee Pot Attendant.

    It is a very important office sponsored by the Holy See.

I have taken this job very seriously, because I believe that I am the key to increased productivity at the Undergraduate School.  Why, by mid-morning, many of my colleagues act as if they were

It is imperative that I restore productivity via a secret naturally-occurring molecule, caffeine........

    In order to see if my secret molecule works, I have observed the time, in hours, a random selection of ten of my colleagues

who could stay awake at the extremely long-winded Dean's meeting as soon as it started.  Oh, yes, one fell asleep even before the meeting started!

1.9

0.8

1.1

0.1

-0.1

4.4

5.5

1.6

4.6

3.4

    Disclaimer: I was not in the picture above.

    Now, I have to complete a report to the Provost's Office on the effectiveness of my secret molecule so that UMUC can file for a patent at the United Provinces Patent and Trademark Office as soon as possible.  Oh, yes, I am waiting for a handsome reward from the Provost.....

    But I need the following information:

• What is a 95% confidence interval for the time my colleagues can stay awake on average for all of my colleagues?

• Was my secret molecule effective in increasing their attention span, I mean, staying awake?  And, please explain.....

    OK, take your time, but hurry up !!!