Transcript Discrete Review Game

Discrete Review
Game
About 25% of those called for
jury duty will find an excuse
(work, poor health, travel, etc.)
to avoid jury duty. If 12 people
are called, what is the probability
Binomial
that less than 6 will not be
available to serve?
P(X < 6) = .9456
A survey of families in Statsylvania
found that 12% of the households
had not motor vehicles, 36% had
one vehicle, 33% had two vehicles,
18% had three vehicles,
and 1%
Random
had four vehicles. Find the mean
and standard deviation for this
distribution.
m = 1.6 & s = .95
The EPA reports that 81% of
Americans do not recycle
garbage. If 6 Americans are
randomly selected, find the
probability that
at least two of
Binomial
them recycle.
P(X > 2) = .3201
One airline has found that 9% of
the people who make
reservations do not show. If the
airline has accepted 220
reservations for a plane that has
210 seats, whatBinomial
is the probability
that there are enough seats for
all the passengers who show up?
P(X < 210) = .9959
An experiment consists of tossing
a coin 10 times. What is the
probability that the first head will
occur on the fourth toss?
Geometric
P(X = 4) = .0625
According to the US Census Bureau,
about 22% of American children under
the age of 6 live in households with
incomes below the official poverty level.
A random sample of 400 children under
the age of 6 is taken. What are the
Binomial
mean and standard deviation of children
in the sample who come from households
with incomes below the official poverty
level?
m = 88 & s = 8.28
The probability that a student is
tardy to Statistics class is 0.012.
(They just can’t wait to come to
Geometric
class!) How many students
should Mrs. Fritz expect to see
before the first one is tardy?
m = 83.33
ART receives an average of 1.2 orders
an hour for rat traps; if they hold 14 rat
traps in inventory, what is the
probability that on any given eight-hour
day they will be unable to ship all the
traps for which theyPoisson
receive orders?
P(X >14) = .0643