Questions regarding exact versus approximate one-sample procedures for a proportion
Questions regarding the modified estimator
Nonparametric Procedures for Inferences about a Population Median
Sign Test (Stat > Nonparametrics > 1-Sample Sign)
Computing Type II error probabilities
Example - Let p equal the proportion of defective components in a very large shipment sent to a computer company. The company accepts the shipment only if Ho: p =0.1 can be rejected in favor of Ha: p < 0.1 at a significance level of 0.05 based on a sample of 100 components.
Compute the probability of failing to reject Ho when the actual percentage of defectives is 7%.
Compute the probability of failing to reject Ho when the actual percentage is 8%.
Would the probability of failing to reject Ho increase or decrease if the actual percentage is 9%? Explain your response. (Hint: compare the two probabilities you computed above.)
Power and sample size calculations with Minitab
Stat > Power and Sample Size
Class Exercises
Apply the sign test to Exercises 10.53 and 10.91. Compare and contrast the results of the sign test with the results of the t test.