Hypothesis Testing
What is the p-value in a hypothesis test?
In a one-sample t-test, if the sample mean is 45, the hypothesized population mean is 40, and the standard error is 3, what is the t-statistic?
A researcher conducts a two-sample z-test and finds a z-score of 2.5. What is the corresponding p-value assuming a two-tailed test?
If a chi-squared test of independence has 3 degrees of freedom and a chi-squared statistic of 10.2, what is the p-value?
A random sample of 150 students showed that 90 of them prefer online learning. Calculate the sample proportion.