A simple random sample of n = 25 college students was selected to participate in

Question

A simple random sample of n = 25 college students was selected to participate in an intensive Spanish language program. At the beginning of the program, the students were given a foreign language comprehension test. After 15 weeks of immersion in Spanish, the students took the test again. The results are summarized in the table. Sample standard Sample mean Description Initial test Re-test Re-test- initial Group deviation s, 14.966 #2 = 8.556 s = 19.223 = 75.16 x2 = 88.04 -= 12.88 Difference Compute the standard error estimate, SE, of the mean difference in test scores. Give your answer to two decimal places SE= points

Explanation / Answer

here as we know that standard error of mean difference in test scores =std deviation/(n)1/2 =19.223/(25)1/2

=3.84

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