Question

An SAT prep course claims to increase student scores by more than 60 points, on average. To test this claim, 9 students who have previously taken the SAT are randomly chosen to take the prep course. Their SAT scores before and after completing the prep course are listed in the following table. Test the claim at the 0.05 level of significance assuming that the population distribution of the paired differences is approximately normal. Let $d = \text{(scores after completing the prep course)} - \text{(scores} \text{before completing the prep course)}$. \begin{tabular}{|c|c|c|c|c|c|c|c|c|c|} \hline \multicolumn{10}{|c|}{SAT Scores} \\ \hline Before\\Prep\\Course & 1410 & 1290 & 1100 & 1120 & 1450 & 1020 & 1250 & 1090 & 1490 \\ \hline After\\Prep\\Course & 1610 & 1430 & 1230 & 1130 & 1640 & 1020 & 1260 & 1240 & 1510 \\ \hline \end{tabular} Copy Data Step 1 of 3: State the null and alternative hypotheses for the test. Fill in the blank below. $H_0: \mu_d = 60$ $H_a: \mu_d$ ______ 60

          An SAT prep course claims to increase student scores by more than 60 points, on average. To test this claim, 9 students who have previously taken the SAT are randomly
chosen to take the prep course. Their SAT scores before and after completing the prep course are listed in the following table. Test the claim at the 0.05 level of
significance assuming that the population distribution of the paired differences is approximately normal. Let $d = \text{(scores after completing the prep course)} - \text{(scores}
\text{before completing the prep course)}$.
\begin{tabular}{|c|c|c|c|c|c|c|c|c|c|}
\hline
\multicolumn{10}{|c|}{SAT Scores} \\
\hline
Before\\Prep\\Course & 1410 & 1290 & 1100 & 1120 & 1450 & 1020 & 1250 & 1090 & 1490 \\
\hline
After\\Prep\\Course & 1610 & 1430 & 1230 & 1130 & 1640 & 1020 & 1260 & 1240 & 1510 \\
\hline
\end{tabular}
Copy Data
Step 1 of 3: State the null and alternative hypotheses for the test. Fill in the blank below.
$H_0: \mu_d = 60$
$H_a: \mu_d$ ______ 60

An SAT prep course claims to increase student scores by more than 60 points, on average. To test this claim, 9 students who have previously taken the SAT are randomly
chosen to take the prep course. Their SAT scores before and after completing the prep course are listed in the following table. Test the claim at the 0.05 level of
significance assuming that the population distribution of the paired differences is approximately normal. Let d = (scores after completing the prep course) - (scoresbefore completing the prep course).

10|c|SAT Scores

Before
Prep
Course 1410 1290 1100 1120 1450 1020 1250 1090 1490

After
Prep
Course 1610 1430 1230 1130 1640 1020 1260 1240 1510

Copy Data
Step 1 of 3: State the null and alternative hypotheses for the test. Fill in the blank below.
H0: = 60
Ha: 60

Added by Kimberly B.

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