An 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
A. 0.07
B. 0.17
C. 0.26
D. 0.83
I DON'T UNDERSTAND THIS ONE!
Pr(exp)=Pr(2)+Pr(3)=(26+36)/360=.17
D is not independent
spinner: 1/9
others correct
4) A number cube with the numbers 1 through 6 is rolled. Find the probability of rolling a number greater than 5.
A. 1/6***
B. 1/3
C. 1/4
D. 2/3
An 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
A. 0.07
B. 0.17
C. 0.26
D. 0.83
I DON'T UNDERSTAND THIS ONE!
A survey showed that 62% of cars prefer two door cars and 26& prefer four door cars and 12% have no preference you ask 400 people how many do you think will prefer two door cars?
A. 126 people
B. 152 people
C. 196 people
D. 248 people***
The spinner is divided into equal parts use a tree diagram to find the proabbilty that the spinner will land ona consonant both times if the spinnes is spun twice ( there is a circle with 3 equal parts 1 part ha letter N the second E and the third U)
A. 1/9
B. 1/3
C. 5/9
D. 3/4
which events are not indepentents
A. landing on heads after tossing a coin and rolling a 3 on a 6 sided number cube
B. choosing a marble from a jar landing ona tails after tossing a coin
C. choosing a 5 froma deck of cards replacing it then choosing an ace as the second card
D. choosing a card at random from a deck without replacing it and choosing another card at random
2 answers
thx so much!
2 answers