Bus 308 quiz2 Answer - 20111

Solution Posted by
studentlance

studentlance

Rating : (5)F
Solution Detail
Price: $5.00
  • From: Business,
  • Posted on: Sat 27 Jul, 2013
  • Request id: None
  • Purchased: 0 time(s)
  • Average Rating: No rating
Request Description

1. P(A∩B) = 0 represents. (Points : 1)

         Independent events

         Mutually exclusive events

         Conditional events

         Dependent events

 

 

2. When two events are independent and we are calculating conditional probability P(A | B) then it follows that (Points : 1)

         P(A) = P(B)

         P(A | B) = P(A)

         P(A ∩ B)=2

         P(A U B)=0

 

 

3. The _______________ describes the number of occurrences of an event over a specified interval of time or space. (Points : 1)

         Binomial random variable

         Poisson random variable

         Discrete random variable

         Continuous random variable

 

 

4. In a statistical study, the random variable X = 1, if the house is colonial, and X = 0 if the house is not colonial, then it can be stated that the random variable is continuous. (Points : 1)

         True

         False

 

 

5. Which two distributions are useful in analyzing queues? (Points : 1)

         Binomial and normal

         Normal and exponential

         Poisson and normal

         Poisson and exponential

 

 

6. If a random variable x has a uniform distribution with a mean of 10 and the lowest value of x is 5 what is the largest value of x that can exist? (Points : 1)

         5

         15

         10

         20

 

 

7. The height of a continuous probability curve over a given point is (Points : 1)

         Equal to the mean

         Equal to the standard deviation

         Equal to zero

         Equal to Z

 

 

8. Events that have no sample space outcomes in common, and, therefore, cannot occur simultaneously are (Points : 1)

         independent.

         mutually exclusive.

         intersections.

         unions.

 

 

9. A standard normal distribution has a mean of ____and standard deviation of ____ (Points : 1)

         zero, zero.

         zero, one.

         one, one.

         one, zero.

 

 

10. The rule of complements is represented by (Points : 1)

         P(A | B) = P(A ∩ B)

         P(A U B) = P(A) + P(B) – P(A ∩ B)

         P(?) = 1 – P(A)

         P(A ∩ B) = P(A) * P(B)