Discussion:
Q: A researcher asks whether attending a private high school leads to higher or lower performance on a test of social skills when compared to students attending public schools. A sample of 100 students from a private school produces a mean score of 71.30. The population mean (m) for students from public high schools is 75.62. The population standard deviation is 28. Zobt is -1.54. Zcrit is ± 1.96.
Should the researcher use a one-tailed or a two-tailed test Why
What is the alternative hypothesis
What is the null hypothesis
What should the researcher conclude about this relationship in the population
Are the results significant Explain your response.
What is the probability of making a Type I error
If a Type I error were made, what would it mean
What is the probability of making a Type II error
If a Type II error were made, what would it mean