Eric Nicholas K's answer to angelina's Junior College 2 H2 Maths Singapore question.
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Good evening Angelina! Here are my workings for this question, without a graphing calculator. A scientific calculator can also do the job, but more tedious.
Date Posted:
4 years ago
A Level student so probably GC is available to her (she mentioned binomcdf anyway)
All it does is to consolidate all the individual calculations to save the user the hassle of manual keying.
The student should get the same mark this question is done is the normal probability way
All it does is to consolidate all the individual calculations to save the user the hassle of manual keying.
The student should get the same mark this question is done is the normal probability way
I presume the student has a GC.
I myself do not have a gc (my JC one malfunctioned years ago), so I had no choice but to do these manually.
I myself do not have a gc (my JC one malfunctioned years ago), so I had no choice but to do these manually.
Actually no need. There are websites that can do binomial distribution probability calculations , even normal distribution ones. First 3 or 4 of a typical Google Search will get you there.
The GC's limitation is that it cannot calculate P(X ≥n) directly (at least for TI), yet these sites can. Not worth the $100+ price tag
The GC's limitation is that it cannot calculate P(X ≥n) directly (at least for TI), yet these sites can. Not worth the $100+ price tag
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