454 Probability and Predictions- MONEY Donoma had 8 dimes and 6 pennies in her pocket. If she randomly
selected one coin and then a second coin without replacing the first, what
is the probability that both coins were dimes? Is this a dependent or
independent event? Explain. - POPULATION Use the information in
the table.
Lewburg County Population
Demographic
GroupFraction of the
Population
Under age 18 _ 10318 to 64 years old _^35
65 years or older _ 101
Rural Area _^45
Urban Area _^15
Assume that age is not dependent on
the region.
a. A resident of Lewburg County
is picked at random. What is the
probability that the person is
under 64 years old and from an
urban area?
b. What is the probability that the person
is less than 18 years old or 65 years
or older and from a rural area?2525 DOMINOES A standard set of dominoes contains 28 tiles, with each tile
having two sides of dots from 0 to 6. Of these tiles, 7 have the same
number of dots on each side. If four players each randomly choose a tile,
without replacement, what is the probability that each chooses a tile with
the same number of dots on each side?C 26. OPEN ENDED There are 9 marbles representing 3 different colors. Write a
problem where 2 marbles are selected at random without replacement
and the probability is _^16.- FIND THE ERROR The spinner below is spun twice. Raul is finding the
probability that both spins will result in an even number. Find his
mistake and correct it.
^25 • ^14 = _ 202
45 31 2- CHALLENGE Determine whether the following statement is true or false.
If false, provide a counterexample.
If two events are independent, then the probability of both events is less than 1. - E WRITE MATH Explain the difference between independent events
and dependent events.
Real-World Link
The game of
dominoes is believed
to have originated in
12 th century China.RR
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