Half Day @ Pizza Hut

Hi Ms Ling,

Our class went to pizza hut today after the half day for luNch.

Since the workers were short-handed, we decided to take initiative and help clear up the tables ourselves. Definitely a good quality exemplified by NJCians. =)

Interacting with one another is a great example to show that we have good time management while waiting for the food to be served. (Though we still think taking our tutorials out to do is the best way to spend time)

This is the cheesy lava pizza or whatever you call it. We still take the time off to calculate the area of this pizza. The equation (PIE)r² never leaves our mind.

We are 90% confident that these meals will make our stomach 80% full.


Ermmm... there's 5!/5 types of arrangement for the guys to sit around this table.
Hey please look at the camera (-_- )

Yesss that's the way. 12! arrangements for the people at this row of tables.

From this picture, we can see that out of 16 sample octos, 15 are smiling.
(i) Estimate the percentage of all(28) octos smiling during a photo taking session from this sample.
(ii) Calculate the 98% confidence limits for this estimate.
(iii) What is the smallest sample size would have to be taken in order to estimate the percentage to within 0.5%? Comment on the feasibility of the sample size.

Please solve this question before leaving our blog. Thank You =)