Steps in Hypothesis Testing: Videos & Practice Problems

In a recent study, researchers investigated whether the average number of hours of sleep per night for students has changed compared to a known value of $7$. The sample mean and standard deviation are $7.013$ and $0.196$ hours, respectively, collected from $30$ students. Use a significance level of $0.05$ to perform a one-sample $t$-test to evaluate the hypothesis that the average number of hours of sleep is $7$. Calculate the value of the test statistic.