Probability and Evidence in Experiments

Probability and Evidence in Experiments

Assessment

Interactive Video

Mathematics

9th - 10th Grade

Hard

Created by

Thomas White

FREE Resource

Nicola Pity introduces the concept of evidence using a chocolate bar experiment. Students guess the type of chocolate bar drawn from a bag, which is rigged to contain only one type. This illustrates probability and the null hypothesis. The video explains how to evaluate evidence and apply statistical concepts to determine if an assumption is correct.

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22 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main focus of the introduction section?

How to conduct a classroom experiment

The importance of evidence in probability

The history of chocolate bars

The definition of a null hypothesis

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the significance of the green box mentioned in the introduction?

It is a visual aid for the experiment

It provides historical context

It contains the key idea of the lecture

It lists the types of chocolate bars

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the chocolate bar experiment, what was the initial assumption about the bag's contents?

All bars are Mars bars

One-third of the bars are pinkies

Half of the bars are pinkies

All bars are Crunchies

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What was the actual content of the chocolate bar bag in the experiment?

A mix of all three types

A mix of pinky and Mars bars

Only Mars bars

Only pinky bars

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

At what point do most people start to become suspicious in the experiment?

After one pinky bar

After five pinky bars

After two pinky bars

After three or four pinky bars

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the probability of drawing four pinky bars in a row?

About 50%

About 1%

About 33%

About 10%

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the probability of drawing five pinky bars in a row?

1 in 729

1 in 27

1 in 9

1 in 3

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