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Z Test:
This is a screenshot. Ready to play? Scroll down to the section titled "Game".
Play to Learn
Goal(s): Gain experience with evaluating the null hypothesis. See what the Z Test measures.
How: For each scenario presented, evaluate the Z Test, and decide whether to reject the null hypothesis. 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 distribution of sample means, as determined by the null hypothesis and sample size, is presented as a dotted normal curve. On the x-axis is marked the population mean and the distance from it in standard deviations (-3, -2, -1, 0, 1, 2, 3). The value of zero along the x-axis indicates the population mean, as specified by the null hypothesis.
We evaluate the distance between the sample mean and the population mean.
The Z test informs us how many standard errors there are between the sample mean and the null hypothesis (Ho) mean. If there is a good fit, such that the sample mean is somewhere in the middle of the null distribution, then we retain the null hypothesis distribution. When the Z test is ±1.96 or more extreme, then we reject the null hypothesis.
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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