Part A- There is a 70% chance of rain tomorrow and a 20% chance that the volleyball game will be postponed. What is the probability that it will rain tomorrow and the volleyball game will be postponed?

A. 14%

B.35%

C.50%

D. 90%

Part B- Jane surveys a random sample of 200 students from her middle school to learn what type of school lunch is preferred. The table below shows the result of the survey:

Lunch Type Sandwich Hot Dog Salad Number of students 84 85 31

Which of the following inferences can be made based on the data?

A. A sandwich is the most preferred lunch.

B.A sandwich is two times more popular than a salad.

C.Sandwiches and hot dogs are almost equally preferred.

D.A hot dog is almost two times more popular than a salad.

Part C- A researcher posts a newspaper advertisement offering $20 in exchange for participation in a short study. The researcher accepts the first five people who respond to the advertisement. Which of the following statements is true about the sample?

A.It is not a valid sample because it is only a short study.

B.It is a valid sample because money was offered to participants.

C.It is a valid sample because the first five people were selected to participate.

D.It is not a valid sample because it is not a random sample of the population.