Using traditional methods it takes $10\mathrm{.}0$ hours to receive a basic driving license. A new license tra$$ning method using Computer Aided Instruction $($CAI$)$ has been proposed. A researcher used the technique on $22$ students and observed that they had a mean of $9\mathrm{.}8$ hours with a standard deviation of $1\mathrm{.}4.$ Is there evidence at the $0\mathrm{.}025$ level that the technique reduces the training time? Assume the population distribution is approximately normal.

Step $1$ of $5$: State the null and alternative hypotheses.

Answer $2$ Points

Keyboard Shortcuts

$H_0$

$H_a$