Chapter 17 Probability models

Question 1

Bernoulli Trials

Answer 1

. there are only 2 possible outcomes ( called success and failure) on each trial
.The probability of success is denoted p, is the same on every trial
. The trials are independent
. the probability of a success on your second try is
P(Y=2)= ( pq)

Question 2

If we want to calculate how long will it take to acheive the first success in a series of bernoulli trials

Answer 2

GEOMETRIC PROBABILITY MODEL

. They are completely specified by one parameter, “p” the probability of success, and are denoted Geom ( p)

Question 3

THE 10% CONDITION OF INDEPENDENCE

Answer 3

Bernoulli trials must be independent. If that assumption is violated, it okay to proceed if the sample is smaller than 10% of the population

Question 4

BINOMIAL PROBABILITY

Answer 4

. Used for the NUMBER OF SUCCESSES ( probability to get EXACTLY