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Z Test Statistic &
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Play to Learn
Goal(s): Gain experience with evaluating the null hypothesis, whether provided the Z test or the p-value. Observe how the width of the Distribution of Sample Means decreases with an increase in sample size, affecting both the Z test and p value.
How: For each scenario presented, decide based upon the Z Test or p-value, whether the results are statistically significant (such that the null hypothesis should be rejected and the research hypothesis supported). Make 30 quick decisions, with immediate feedback.
Site: P2L.io
About
About
For this game, a red dot is used to represent the sample mean.
The null hypothesis states that the population mean is in the middle of the distribution of sample means. Thus, based on the null hypothesis, we expect the sample mean to occur near the middle of the distribution. Note that the larger our sample size, the more narrow our Distribution of Sample Means.
This means that the larger the sample size, the smaller the difference (between the sample mean and the null specified population mean) it takes to reject the null hypothesis. The alpha level remains at .05.
For this two-tailed hypothesis test, reject the null hypothesis when
The Z test is either [a] 1.96 or greater or [b] -1.96 or less,
the p value is .05 or less
Game
Optional: Earning Class Credit
To earn credit for this activity:
Click the 'Accommodations' button on the game menu.
Using the number pad (in the Accommodation dialog box), type the passcode provided by your instructor.
Click the 'Continue' button. Doing so will return you back to the game menu.
Then click 'Start' to begin the game.
When you complete the task with a score of 85% or greater, you will be given a completion code. To view this completion code, click on the 'Completion Code' button.
To get credit for having completed the activity, provide the completion code as your answer (e.g., to a quiz question). If the completion code is not yet available (e.g., performance was less than 85%), then click the 'Continue' button to re-do the activity.
Accommodations include:
Screen Reader (click the 'Screen Reader' button)
Unlimited decision time (e.g., Click the 'Accommodations' button, then type #17 by itself or at the end of a passcode. Click 'Continue').
Please notify your instructor if requesting these accommodations.
Instructors can modify games and set up quizzes rather easily. Check out game modifications.
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