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Copyright © Casio, Inc. Activity 9 • Statistics and the Casio fx-9750G Plus 43
Activity 9
Rainbow of Fruit Flavors
Topic Area: Hypothesis Testing
NCTM Standards:
• Develop and evaluate inferences and predictions that are based on data
• Use simulations to explore the variability of sample statistics from a
known population and to construct sampling distributions (9-12)
• Understand how sample statistics reflect the values of population
parameters and use sampling distributions as the basis for informal
inference (9-12)
Objective
The students will be able to accept or reject a null hypothesis based on given data
and calculations of confidence.
Introduction
This activity should work well with the students because they get to have candy.
Only one rule: they have to count before they eat!
The students will need their own personal data as well as a full class set of data.
Have each student open their bag of Skittles
®
, count and record the number of
each color they have in a chart. After each student has finished counting, have
he/she share the data with the class. Make a class chart on the overhead, board,
or flip chart. Have them follow the directions on the student worksheet to com-
plete the activity.
The students should be familiar with the following vocabulary:
Sample Sample distribution
Population Mean
Parameters Inference
Confidence Z-test
Variables: Z, p, n
Getting Started
For this activity you will need the Casio fx-9750G Plus graphing calculator and
small bag of Skittles®. The students will perform a confidence test based on the
percentage of one color in the bag compared to the class percentage of the same
color.
Teaching Notes
- STATISTICS 1
- Contents 4
- Activity 1 • Blowing Bubbles 8
- Example Bubble Diameter Data 9
- Diameter (cm) 9
- (continued) 10
- Teaching Notes 12
- Getting Started 13
- Introduction 14
- Problems and Questions 14
- Copyright © Casio, Inc 15
- 2(STAT) 20
- F4(DEL-A), then F1(YES) 20
- 8.22 10 31
- 1.83 10 31
- 4. Type 31, F3(nCr), 3 EXE 33
- Activity 10 • Class Height 54
- Activity 11 • Exit Polls 59
- Activity 12 • IQ Testing 65
- highlighted type 100 EXE 66
- Activity 13 • Gas Mileage 72
- Activity 14 • Bouncing Balls 79
- Memory Function 96
- Memory Usage: 96
- Resetting Memory: 96
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