17 terms

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)?