1. A single, standard number cube is tossed. What is the probability of getting a 4 or 5? (1 point)
1
one-fifth
one-third
start fraction 1 over 6 end fraction
start fraction 2 over 6 end fraction (or one-third) - because there are two out of six possible outcomes that result in a 4 or 5 (4 and 5), and there are six equally likely outcomes in total.
1. A single, standard number cube is tossed. What is the probability of getting a 4 or 5? (1 point)
1.1
2.one-fifth
3.one-third
4.start fraction 1 over 6 end fraction
The answer is 3. one-third. There are two possible outcomes that result in a 4 or 5 (4 and 5), out of a total of six possible outcomes (1, 2, 3, 4, 5, or 6). So, the probability of getting a 4 or 5 is 2/6, which simplifies to 1/3 or one-third.
2. A game involves spinning this spinner. What is the probability of the pointer landing on G?
A circle is divided equally into eight sections.· Two of the sections are labeled with an upper B.
· One of the sections is labeled with an upper G.
· One of the sections is labeled with an upper Y.
· Four of the sections are labeled with an upper R.
· An arrow originating from the center of the circle is pointing at one of the sections with an upper R.
(1 point)
one-eighth
start fraction 5 over 8 end fraction
one-half
start fraction 3 over 8 end fraction
The probability of the pointer landing on G is 1/8 or one-eighth. There is only one section on the spinner that is labeled with an upper G, and there are a total of eight equally likely sections on the spinner. Therefore, the probability of the pointer landing on G is 1/8.
3. The table shows the color preferences of 50 shoppers at the mall. What is the probability that one shopper, selected at random from the 50 surveyed, preferred the color red or blue?
Color Preferences
Color Number of Shoppers
Red 7
Yellow 3
Blue 13
Green 15
Orange 12
(1 point)
start fraction 7 over 50 end fraction
two-fifths
one-half
two-thirds
The probability that one shopper, selected at random from the 50 surveyed, preferred the color red or blue is:
P(red or blue) = P(red) + P(blue)
P(red) = 7/50 (from the table)
P(blue) = 13/50 (from the table)
P(red or blue) = 7/50 + 13/50
P(red or blue) = 20/50
P(red or blue) = 2/5
P(red or blue) = 0.4
Therefore, the probability that one shopper, selected at random from the 50 surveyed, preferred the color red or blue is two-fifths or 0.4.
4. A standard number cube with the numbers 1 through 6 is rolled. Find the probability of rolling a number greater than 5. (1 point)
start fraction 1 over 6 end fraction
one-third
one-fourth
two-thirds
The probability of rolling a number greater than 5 on a standard number cube is:
1/6
There is only one outcome (rolling a 6) out of six possible outcomes (rolling a 1, 2, 3, 4, 5, or 6) that results in a number greater than 5. Therefore, the probability of rolling a number greater than 5 is 1/6.
5. A number cube is rolled 360 times, and the results are recorded as follows: 61 ones, 26 twos, 36 threes, 76 fours, 73 fives, and 88 sixes. What is the experimental probability of rolling a 2 or a 3? (1 point)
0.07
0.17
0.26
0.83