Last Semester’s Test – Winter 2018 Term Test #2

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ADMS 2320 - Term Test 2 - Winter 2018

 
 
 

Lessons

Question 1a (Preview)

Author: Jason

This is a Chapter 8.1 Uniform Distribution question. To solve it, we’ll need to first work out the height of the distribution: f(x), and then calculate the area under the curve over the interval 4,500 gallons – 6,500 gallons.

Question 1b (Preview)

Author: Jason

Another Chapter 8.1 Uniform Distribution question. Here we’re asked to find the probability of an interval that sits partially outside of the uniform distribution – No worries though, the solution is simple. Just ignore the probabilities of x values below the minimum of 1,000 gallons.

Question 1c (Preview)

Author: Jason

More Chapter 8.1 Uniform Distribution – but this is a trick question. For continuous data you need to remember that probability equals the area under the curve. If there is no interval defined to hold an area, then there is no probability.

Question 1d (Preview)

Author: Jason

Guess what? Yet another Chapter 8.1 Uniform Distribution question. The interval defined in this question appears to have no upper limit ( X > 6,000), but since the probability of any value of X outside the uniform distribution is zero, we find the area within the interval 6,000 < X < 11,000.

Question 1e (Preview)

Author: Jason

Now we move to a binomial solution from Chapter 7. Why? The focus of the probability in this question changed from an individual outcome to a number of outcomes (at least 4 days out of a 7-day week). I demonstrate how to solve this the long way (formula) and the quick way (binomial table).

Question 1f (Preview)

Author: Jason

This is a simple binomial question where we are looking for the probability that x has an exact value (much easier than looking for <, ≤, >, or ≥ relationships). I show you how to solve this one using both the formula and the table.

Question 1g (Preview)

Author: Jason

This question is a curve that they throw in every Term Test #2. Parts a) to d) focused on individual daily outcomes (Chapter 8), then parts e) and f) gave us a sample size of 7 days so we switched to binomial solutions (Chapter 7), but now we need Chapter 9 to solve what still looks like a binomial experiment. Why? … the sample size is too large!

Question 2c

Author: Jason

Most exams include this reverse chapter 8 question where you're giving a probability and asked for the boundary. Make sure you understand how to justify your answer for this type of problem.

To access all of the Past Term 2 Tests and their solutions, Chapter Lessons and Cheatsheet please purchase one of the following:

Question 2d

Author: Jason

A lot of students scored zero marks on this past exam question. They simply have no idea how to approach the solution. It's actually not as bad as it looks - let me show you how to work it out.

To access all of the Past Term 2 Tests and their solutions, Chapter Lessons and Cheatsheet please purchase one of the following: