A study on the factors (other than credit constraints) that would influence the college dropout decision was published. One factor of interest was expected GPA for a college student who studied 3 hours per day. In a representative sample of 310 college students, the researchers reported the following summary statistics for the expected GPA of those who studied 3 hours per day: x= 2.97, s=0.56. Complete parts a and b below. a. Give an interval that will contain most (at least 75% to approximately 95%) of the 310 GPAS. Based on Chebyshev's Rule and/or the Empirical Rule, an interval that will contain at least 75% to approximately 95% of the 310 GPAS is ( (Round to two decimal places as needed.) b. If you observe a GPA of 1.38, is it likely that this college student studied 3 hours per day? Explain. that this college student studied 3 hours per day, since the It is is the interval from part a.

A study on the factors (other than credit constraints) that would influence the college dropout decision was published. One factor of interest was expected GPA for a college student who studied 3 hours per day. In a representative sample of 310 college students, the researchers reported the following summary statistics for the expected GPA of those who studied 3 hours per day: x= 2.97, s=0.56. Complete parts a and b below. a. Give an interval that will contain most (at least 75% to approximately 95%) of the 310 GPAS. Based on Chebyshev's Rule and/or the Empirical Rule, an interval that will contain at least 75% to approximately 95% of the 310 GPAS is ( (Round to two decimal places as needed.) b. If you observe a GPA of 1.38, is it likely that this college student studied 3 hours per day? Explain. that this college student studied 3 hours per day, since the It is is the interval from part a.

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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A special education teacher did research on whether or not there is a relationship between the number of students in his class and the number incidents of “acting out” behaviors exhibited by the autistic students in the classroom. He collects data for a year and aggregates them by month. He obtained the statistics below, r= -.863 R2=.74 b= -1.212294 a= 131.176598 10.) How does the presence of more students affect the incidents in the class? a) as students are added the incidences increase b) as students are added the incidences decrease c) the number of students does not affect acting out d) the number of students caused more incidents How much of the variability of acting out is explained by the number of students in the class?___________
What was the power for this study?
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Please answer part a-d. please show all your work
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