2012/2013 SESSION ONE – CLASS EVALUATION DEWT/ DCEB 2FT - ENGINEERING MATH 2 Period Allowed: 40 mins Guidance To Applicants: 1 . installment payments on your 2 . several. 4. 1 ) All the SP exam rules are to be complied with.
A ‘mathematical formulae and tables' card is usually provided.
Every non-exact answers are to be remedied to 3 significant figures Almost all answers are to be written inside the answer guide provided. Response ALL the THREE questions. The level of pollution (measurements y in coded units) in a metropolis and the related temperature and humidity index (measurements by ) had been recorded in noon on 10 different days. Fundamental calculations produced
a couple of
A scatter plan indicates a linear craze. (a) (b) (c) Get the correlation coefficient, 3rd there�s r, and touch upon its benefit. Show that this trend is positive. Estimation the level of polluting of the environment at noon on a day when the temp and humidness index is 75. (Note that in the 10 days, the temperature and humidity index ranged from 31 to 95) (15 marks)
A random adjustable X
D (, 2 )
(a) In the event that 30, 2 16, find the possibility of P(X < 33). (b) In the event 25, 2 9, discover the value of e for P(X > k) = 0. 0537 (15 marks)
three or more.
The length of fishing rods in a huge batch with mean one hundred twenty mm and a standard change of 1. five mm. (a) (b) What percentage from the rods may have length of more than 122. 5 mm? In the event that 10% of rods may be rejected internet marketing too short, precisely what is the bare minimum length of the fishing rods that will recognize? What is the assumption you have made in your calculation? (20 marks) END
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