Sharp Efficiently Perform Statistical Tests Using the EL-9600 Calculator

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NAME _____________________________________________________ CLASS __________ DATE __________

10.2

STATISTICAL TESTS

Steps for performing a two-small-sample hypothesis test for the population means

1. Access the data entry screen and enter the additional data for L2.
(Use the Bears data from 10.1):
L2 Packers 8	5	5	8	8	8	8	4	5
4	10	6	4	9	9	9	11	13

2.Check the data you have entered and correct any errors you may find. The data shown above reflects the number of wins for the Chicago Bears and Green Bay Packers in each season since 1978. Test the alternate hypothesis that "da Bears" are a better (on the average win more games) football team than the Packers during these recent years.

3.

Set up the statistical test by pressing

2ndF

QUIT

STAT

, touching

E TEST, and double touching 04 Ttest2samp.

4.

Set the alternate hypothesis to µ1 > µ2 by pressing

▼ ▼

ENTER

.

Pool the standard deviations in the calculation by pressing

▼

▼

ENTER

.

Set the List1 to L1 by pressing ▼

2ndF

L1

ENTER

. Set List2 to L2

by pressing

2ndF

L2

ENTER

. Press

2ndF

EXE

to compute the

statistical test.

5.The first item on the screen, µ1>µ2, is the alternate hypothesis of the statistical test. The second item is the observed statistic from the sample . The third item is decision statistic or p value. In our problem, the p value is .0323 which is less than .05. Our decision is to reject the null hypothesis that µ1=µ2 and support the alternate hypothesis that µ1>µ2. This test clearly shows that

"da Bears" average more wins a season than the Packers and thus are a better football team. The fifth and sixth values show on the average, "da Bears" win approximately 9 games a season, whereas the Packers win 7.

Blackline Masters/STATISTICS USING THE SHARP EL-9600

87

Copyright © 1998, Sharp Electronics Corporation. Permission is granted to photocopy for educational use only.

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Contents Sharp E L 9 6 0 Statistics Ii Statistics Using the Sharp EL-9600 Contents Creation of a Page Enter StatList Method of Teaching For Discussion Chapter two 1Stats Method of Teaching Using Blackline Master Additional Problems Chapter three Enter Page Save this data set by pressing 2ndF For Discussion Chapter four Enter DEL Quit TraceStat Plot Enter Enter 2ndF Chapter five Touch a Edit List , touch To enter the statistics menu For Discussion Chapter six Page Page 2Stats. Press Page Find the numerical descriptions of the following data sets Chapter seven DEL Enter Source U.S. Environmental Protection Agency Math For DiscussionAdditional Problems Page Linear Regressions Linear Regressions/STATISTICS Using the Sharp EL-9600 Linear Regressions/STATISTICS Using the Sharp EL-9600 Method of Teaching Scattr Additional Problems Other Regressions Touch D REG, touch On the screen, double touch 10 Rgaebx, Method of Teaching Using Blackline Master Additional Problem Statistical Tests Statistical Tests/STATISTICS Using the Sharp EL-9600 Method of Teaching Using Blackline Master Statistical Tests/STATISTICS Using the Sharp EL-9600 For Discussion Contents Reproducible Blackline Masters Creation of a ONE-VARIABLE Data SET Steps for creating a non-weighted one-variable data setDouble touch 1 StoLD, press Steps for creating a weighted one-variable data setActivity 2 Creating a weighted one-variable data set Activity 1 Creating a non-weighted one-variable data setONE-VARIABLE Data SET Numerical Description of a ONE-VARIABLE Data SET Numerical Description of a ONE-VARIABLE Data SET Numerical Description of a ONE-VARIABLE Data SET To view the histogram, press Graph Steps for creating a non-weighted data sets histogramSteps for creating a weighted data sets histogram Activity 2 Creating a weighted data sets histogram Activity 1 Creating a non-weighted data sets histogramOther Graphical Portrayals of a Stat Plot ONE-VARIABLE Data SET Creation of a TWO-VARIABLE Data SET Steps for creating a non-weighted two-variable data setSteps for creating a weighted two-variable data set Activity 2 Creating a weighted two-variable data set Activity 1 Creating a non-weighted two-variable data setNumerical Description TWO-VARIABLE Data SET Quit Stat Numerical Description TWO-VARIABLE Data SET Zoom Graphical Portrayal TWO-VARIABLE Data SETGraphic Portryal of a TWO-VARIABLE Data SET Drawing a scatter diagram of a two-variable data setGraphical Portrayal TWO-VARIABLE Data SET Graphic Portrayal TWO-VARIABLE Data SET Access the data entry screen and delete the old data setSteps for calculating the best-fitting line Linear RegressionsGraph Calculating the best-fitting line Access the data entry screen and delete old dataActivity 2 Calculate and plot the regression line Activity 1 Calculate and plot the regression lineSteps for calculating other regression models Other RegressionsModel of best fit Other Regressions Model of Best FITActivity 2 Calculate the power regression model Activity 4 Which regression model fits the best? Statistical Tests EXE 10.3 Sharp EL-9600 Graphing Calculator Keypad forSolutions to Selected Activities Answer Key/STATISTICS Using the Sharp EL-9600 Teaching Notes

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