Hints for activity 10. and Homework 5. LSP 121 hints! Q #

1
Hints for Activity 10and Individual 5

• LSP 121 hints!

2
Q 2 at least once

• Formula
• 1 (Not A in one)n
• A exposed to virus, the event
• P(A) 1.5 .015
• P(not A) 1 P(A) 1 - .015
• n 10 for part a) and 20 for part b)

3
Q 3

• Expected value
• start with what you pay as (-1) cost in
• then add the probability or probabilities of
  gaining back each amount of

4
Q 4

• Expected value
• In this example, start with the cost as 100 x
  1, express as negative -1
• To this add the other winnings x probabilities
• -1 x 1 20 x .012 etc.
• Expected value

5
Q 5

• Possible outcomes
• Set this up with 10 boxes

Area Codes Exchanges
Extensions
In each box, write the number of possible s
that can be found there. Multiply these numbers
to find possible outcomes for particular event
(set of phone numbers or area codes).
6
individual assignment 5

• 1 possible outcomes (ski shop packages) is
  simply the product of the different sets
• 2 ( of ways to get a 5)/(total outcomes)
• 5 Example of calculating odds, usually
  expressed as a ratio, such as 21 or 12, read 2
  to 1 or 1 to 2. Note if something has a
  probability of 50 (for 2 outcomes), then this
  event has 11 odds

7
indiv 5, more

• 6 this is an example of multiplication rule 1
  the probability of multiple independent
  occurences is the product of the individual
  probabilities
• 7 (total ways of getting 3, 4 or 5) / (total
  possible outcomes for 2 dice) be careful when
  calculating ODDs for this same situation.

8
indiv 5, more

• 8
• a) empirical probability do the math
• b) apply the math and predict for next year
• c) use at least once formula 1 (not A)n
• 9 Use addition of probabilities to calculate
  expect value. Note since this is for the
  company, you start with 1000 x 100 (-20,000
  ) (-50,000 ) , since each claim is a
  loss to the company.

9
indiv 5 last part

• 10 This problem is slightly different in that
  two events are non-mutually exclusive the
  occurrence of one event does not exclude nor is
  it excluded by another event. Simply work out
  the formula given
• P(A or B) P(A)P(B) P(A and B),
• P(king) P(heart) P(king and heart)
• ( of kings/52) ( of hearts/52) ( of
  king of hearts/52)