1) Establish a null and alternate hypothesis
2) Choose a decision rule (a level of significance)
3) Find critical regions
4) Draw the sample
5) Calculate the test statistic
6) Make the decision
Let’s establish a null and alternate hypothesis together H0: μ = 72
HA: μ ≠ 72
Choose a decision rule (a level of significance)
Let’s set our level of significance at: 0.05
2a. Find critical regions
What is the critical value? (Consider how many tails and which test to use based on sample size)
2c. Draw the sample
Sample Mean = Sample Standard deviation = Standard Error =
2d. Calculate the test statistic
Test statistic =
2e. Make the decision
Do you reject or fail to reject the null hypothesis?
Articulate your findings in written words:
2f. Compute a 95% confidence interval.
Confidence Interval = What does this mean? Articulate this in written words.
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