Sprint LTE 12:03 AM Ims.augusta.edu 210 A EmailLibraryle FA-MATH-2210-A Elementa

ID: 3363062 • Letter: S

Question

Sprint LTE 12:03 AM Ims.augusta.edu 210 A EmailLibraryle FA-MATH-2210-A Elementary Statistics Do SAT coaching classes work? Do they help students to improve their test scores? a study. for eight students taking the SAT exam a second time, the improvements in test scores over the first exam were recorded. Four of these students took an SAT coaching class. The other four students did not. Coaching class 0 100 30 40 No coaching class 10 80 0 20 State the hypothesis (2pts) b. What is the test statistic (2pts to Binder Download Activity Details Nov 15, 2017 907 M

Explanation / Answer

a.Null hypothesis -> H0 : means of the two group are same
Alternative hypothesis -> H1 : means of the two groups are different.

b.Enter the data into Excel.
Click on Data Analysis Toolpack present in the Data tab and select ANOVA: SINGLE FACTOR and click OK.
Next, select the data and select the required fields and click OK.

Anova: Single Factor

SUMMARY

Groups

Count

Sum

Average

Variance

Coaching class

200

3533.333

No coaching class

140

2300

ANOVA

Source of Variation

P-value

F crit

Between Groups

450

0.154286

0.708048

5.987378

Within Groups

17500

2916.667

Total

17950

Since the p-value > 0.05, the null hypothesis is accepted and we conclude that there is no significant difference in improvement whether or not an individual takes SAT coaching classes.