Probability help for 10 points.?

Question

1. A bowler rolled the ball 35 times and got 5 strikes. What is the experimental probability that the bowler gets a strike.

a. 1/7

b. 3/7

c. 6/7

d. 7

What is the theoretical probability of rolling a sum less than 5 using two number cubes?

a. 1/6

b. 1/4

c. 1/2

d. 3/4

Segments parallel to the sides are used to divide a square board 3 ft on each side into 9 equal-size smaller squares. If the board is in a level position and a grain of rice lands on the board at a random point, what is the probability that it lands on a corner section?

a. 2/9

b. 1/3

c. 4/9

d. 5/9

Answer 1

a

a

c

simple probability

Answer 2

if you mean on Q2 that it adds up to five or less then this is the answer:

the answer is definitely:

1 = a

2 = a

3 = c



the way to work it out is

1:

35 divided by 5 = 7

so the probability of a bowler getting a strike is 1/7

because the bowler has 1 in 7 chances in theory

of getting a strike

2:

there is 6 ways of adding up to 5 or less on a dice that is:

1+1 , 1+2 ,  1+3 , 1+4 and 2+2.

that means that there is 6/35 chances of rolling 2

numbers that add up to 5 or less that simplified is 1/6

and so on....

good luck with the coursework!!

Answer 3

a

b

c

Answer 4

1.b

2.c

3.?

i think...

Answer 5

1. A. Reduce 5/35...divide the denominator by 5...1/7

2. A. There are 36 ways they can be rolled (6x6).

Six of these add up to less than 5:

1 and 1

1 and 2

1 and 3; and the inverses

1 and 1

2 and 1

3 and 1.

So 6/36 reduced is 1/6.

3. C. This one is easy. The dimensions are 3x3 which is a an area of 9 units (4 square inches each) total. There are fours corners. So 4/9