17 terms

# Probability

#### Terms in this set (...)

likelihood
probability is the _________________ that an event will occur
1/2, 0.5, or 50%
equally likely chance of an event happening is the same as a __________ chance
1/1, 1, or 100%
a certain chance of an event happening is the same as a ______________ chance
0, or 0%
an impossible chance of an event happening is the same as a _________________ chance
1/4, 0.25, or 25%
an unlikely chance of an event happening is the same as approximately a ________________ chance
3/4, 0.75 or 75%
a likely chance of an event happening is the same as approximately ______________ chance
outcome or event
a(n) _________________ is a possible result of an action
experimental probability
ratio of the # of times an event occurs over the total # of trials the activity is performed is called ________________ __________________
trial
a(n) ________ is each observation of an action
theoretical probability
the ratio of the # of favorable outcomes over the number of possible outcomes is called ________________ ________________
favorable outcomes
outcomes in a sample space that satisfy the event desired are called _______________ _________________
6/12 or 1/2 = 0.5 = 50%
If you roll a 12-sided dice, what is the P(rolling an even number)?
4/12 or 1/3 = 0.333 = 33.3%
If you roll a 12-sided dice, what is the probability of rolling a multiple of 3?
5/12 = 0.4167 = ~41.7%
If you roll a 12-sided dice, what is the probability of rolling a number between 4 and 10?
3/8 = 0.375 = 37.5%
If you spin the spinner once, what is the probability that you will get a number greater than 5?
8/52 or 2/13 = 0.1538 = ~15.4%
If you choose a card out of a standard deck of 52 playing cards, what is the P (red Jack or red Queen, or red King, or red Ace)?
24/32 or 3/4 = 0.75 = 75%
Tim has 14 pop, 10 rap, and 8 rock songs on his playlist. If he hits shuffle once, what is the P(not getting a rock song)?

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