Many high school students take the SAT's twice; once in their Junior year and once in...

50.1K

Verified Solution

Question

Basic Math

Many high school students take the SAT's twice; once in theirJunior year and once in their Senior year. The Senior year scores(x) and associated Junior year scores (y) aregiven in the table below. This came from a random sample of 35students. Use this data to test the claim that retaking the SATincreases the score on average by more than 25 points. Test thisclaim at the 0.10 significance level.



(a) The claim is that the mean difference (x - y)is greater than 25 (μd > 25). Whattype of test is this?

This is a two-tailed test.This is a left-tailedtest.    This is a right-tailed test.


(b) What is the test statistic? Round your answer to 2decimal places.
t

d

=

(c) Use software to get the P-value of the test statistic.Round to 4 decimal places.
P-value =

(d) What is the conclusion regarding the null hypothesis?

reject H0fail to rejectH0    


(e) Choose the appropriate concluding statement.

The data supports the claim that retaking the SAT increases thescore on average by more than 25 points.There is not enough data tosupport the claim that retaking the SAT increases the score onaverage by more than 25 points.    We rejectthe claim that retaking the SAT increases the score on average bymore than 25 points.We have proven that retaking the SAT increasesthe score on average by more than 25 points.

    
    
Senior Score (x)Junior Score (y)(x - y)
1265123827
1150111040
1225117451
1081107011
1264122440
1220120515
110811026
1321127447
1317126453
1177116710
1102106339
1291125239
1235119540
1091106031
1097106235
1101107328
1278122256
1214118727
1100106139
1101106635
1240121723
1216118333
1120109129
1295127322
1131109536
1293126330
1174112252
1212119319
112411168
1114108430
1109108722
1177113443
1151107675
1289126722
10611064-3

Answer & Explanation Solved by verified expert
4.2 Ratings (706 Votes)
    See Answer
Get Answers to Unlimited Questions

Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!

Membership Benefits:
  • Unlimited Question Access with detailed Answers
  • Zin AI - 3 Million Words
  • 10 Dall-E 3 Images
  • 20 Plot Generations
  • Conversation with Dialogue Memory
  • No Ads, Ever!
  • Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!
Become a Member

Other questions asked by students