+
1) A NEW SAT STUDY COURSE IS TESTED ON 12 INDIVIDUALS. PRE-COURSE

1) A NEW SAT STUDY COURSE IS TESTED ON 12 INDIVIDUALS. PRE-COURSE

Rating:
Rating
(0)
Author: Christine Farr
Description:

http://theperfecthomework.com/1-a-new-sat-study-course-is-tested-on-12-individuals-pre-course-and-post-course-scores-are-recorded/

1) A new SAT study course is tested on 12 individuals. Pre-course and post-coursescores are recorded. Of interest is the average increase in SAT scores. The followingdata is collected. Conduct a hypothesis test at the 5% level.Pre-course scorePost-course score1200132094092010301130840880110010701250132086086013301370790770990104011101200740850NOTE: If you are using a Student's t-distribution for the problem, including for paired data,you may assume that the underlying population is normally distributed. (In general, youmust first prove that assumption, though.)Part (a)State the null hypothesis.H0: μd < 0H0: μd ≤ 0H0: μd > 0H0: μd ≠ 0Part (b)State the alternative hypothesis.Ha: μd = 0Ha: μd > 0Ha: μd ≠ 0Ha: μd < 0Part (c)In words, state what your random variablex´drepresents.The variablex´drepresents the sample mean difference in SAT scores before thecourse and after the course.The variablex´drepresents the population mean difference in SAT scores before thecourse and after the course.The variablex´drepresents the sample total difference in the scores before and afterthe course.The variablex´drepresents the population total difference in the scores before andafter the course.Part (d)State the distribution to use for the test. (Enter your answer in the form z or tdf where df is the degrees offreedom.): ____Part (e)What is the test statistic? (Round your answer to two decimal places.)=Part (f)What is the p-value? (Round your answer to four decimal places.)

(more)
See More
Try a College Course Free

Sophia’s self-paced online courses are a great way to save time and money as you earn credits eligible for transfer to over 2,000 colleges and universities.*

Begin Free Trial
No credit card required

25 Sophia partners guarantee credit transfer.

221 Institutions have accepted or given pre-approval for credit transfer.

* The American Council on Education's College Credit Recommendation Service (ACE Credit®) has evaluated and recommended college credit for 20 of Sophia’s online courses. More than 2,000 colleges and universities consider ACE CREDIT recommendations in determining the applicability to their course and degree programs.

Tutorial