Discrete Distributions - Practitioner's Exam

	Discrete Distributions - Practitioner's Exam

Which distribution is best suited for modeling the number of babies born in a single day?
Geometric
Binomial
Poisson
Hypergeometric
Which distribution is best suited for modeling the number of harts drawn in a poker hand consisting of 5 cards?
Geometric
Binomial
Poisson
Hypergeometric
Which distribution is best suited for modeling the number of missiles required to hit an aircraft?
Geometric
Binomial
Poisson
Hypergeometric
Which distribution is best suited for modeling the number of defects in a new automobile?
Geometric
Binomial
Poisson
None of the above
Which distribution can be used to model the number of equipment breakdowns in a shift?
Geometric
Binomial
Poisson
None of the above
Which distribution is used to model the number of times a 4 occurs when a die is rolled 10 times?
Geometric
Binomial
Poisson
None of the above
What is the probability of obtaining 4 aces in a 5 card hand if the deck is thoroughly shuffled before the cards are dealt, and the deck contains no jokers?
0.0000185
0.000074
0.0000028
None of the above
What is the probability of obtaining 4 clubs in a 5 card hand if the deck is thoroughly shuffled before the cards are dealt, and the deck contains no jokers?
0.0146
0.0051
0.00092
None of the above
A production process has been in a state of control for several months with a defect rate of 2.3%. If 15 items are selected at random, what is the probability of selecting more than 3 defects?
0.0004
0.0003
0.0004
None of the above
An art dealer sells on average 3.2 paintings priced over $5,000 per day. On any given day, what is the probability that the dealer sells exactly 4 paintings priced over $5,000?
0.0304
0.0313
0.0264
None of the above
An art dealer sells on average 3.2 paintings priced over $5,000 per day. On any given day, what is the probability that the dealer sells less than 4 paintings priced over $5,000?
0.6025
0.5422
0.4919
None of the above
A high school future statistician has historically averaged a success rate of 4.1% when asking a girl for a date. The prom is approaching; what is the probability that nerd will have to ask more than 10 girls to the prom before a girl accepts?
0.6579
0.7359
0.8817
None of the above