Helene is doing a probability experiment. she picks a marble from a bag without looking. she writes down the marbles color in the table. then she puts the marbles back into the bags. the table shows her data.

color | number of times picked

| red | 15 |

| blue | 6 |

| green | 12 |

| black | 20

| yellow | 7 |

based on the data in the table what is the probability that helene will pick a green marble next?

a.4/5

b.3/4

c.1/5

d.1/10

e.1/12

What is the volume of a rectangular prism if the length is 10.4 mm the width is 5 mm in the height is 8 mm

Find the perimeter of the figure shown above. a. 18 yds c. 20 yds b. 10 yds d. 24 yds select the best answer from the choices provided

Apsychology student wishes to investigate differences in political opinions between business majors and political science majors at her college. she randomly selects 100 students from the 260 business majors and 100 students from the 180 political science majors. does this sampling plan result in a simple random sample? why or why not? no, because each group of 200 students in the sample does not have the same chance of being selected. yes, because each group of 200 students in the sample has the same chance of being selected. no, because each individual student does not have an equal chance of being selected. yes, because each individual student has the same chance of being selected.