Question

Which of the following probability tools would not be a reasonable choice to model the likelihood that Zoe will get a grape gumball from a machine that has 4 different flavors: blue raspberry, cherry, grape, and orange?

spinner

slips of paper

deck of cards

die

Answer 1

@kirbykirby

Answer 2

I would go with die since it has 6 sides and is not divisible by 4, so you can't assign equal probabilities to each face for a flavour.

Deck of cards (52) is divisible by 4 which is ok.
A spinner.. you could construct a spinner with 4 equal sections.

Slips of paper, you can put 4 flavours and mix them into a hat

Answer 3

Samuel is researching the favorite foods of the students in his grade. He surveys the students in his science class. Which of the following is not true?

The students in his science class are the sample.

The population is all students in his grade.

He used stratified sampling.

Each student is a unit in the study.

Answer 4

He did not use stratified sampling... that would imply that he would have sampled s subset of students from every different class in his grade.

Answer 5

a subset*

Answer 6

so whts the answere

Answer 7

He used stratified sampling.
They are looking for the statement which isn't true.

Answer 8

What is the experimental probability of rolling a 4 on a standard die if you had twenty trials and 2 successes?

one percent

two percent

ten percent

twenty percent

Answer 9

\[ \text{Experimental probability } = \frac{\text{number of successes}}{\text{number of trials}} \]

Answer 10

so 20%

Answer 11

not quite

Answer 12

ow 10

Answer 13

yup