A prominent university conducted a survey on the effect of part-time work on student grade point average (GPA). Let x be the hours worked per week and y the GPA for the year. A summary of theresults is below. What can the university conclude with an a of 0.10?n = 24Ev=y = 59, xE= 519Ey2 = 171, ) x² = 13638%3DEvx = (v-9)° = 251333 ,a) Compute the quantities below.=What GPA is predicted when a students works 26 hours a week?b) Obtain/compute the appropriate values for H1: B < 0.Critical Value =; Test Statistic =Decision: ---Select---c) Compute the corresponding effect size(s) and indicate magnitude(s).If not appropriate, input and/or select "na" below.Effect Size; Magnitude: ---Select---%Dd) Make an interpretation based on the results.More hours of part-time work significantly predicts a higher GPA.More hours of part-time work significantly predicts a lower GPA.Part-time work does not significantly predict GPA.

Answered: Image /qna-images/answer/38fccf96-0542-42fb-8e82-64f98aaf535a.jpg

Answered: A prominent university conducted a…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A pharmaceutical company claims that its new drug reduces systolic blood pressure. The systolic blood pressure (in millimeters of mercury) for nine patients before taking the new drug and 22 hours after taking the drug are shown in the table below. Is there enough evidence to support the company's claim? Let d=(blood pressure before taking new drug)−(blood pressure after taking new drug)d=(blood pressure before taking new drug)−(blood pressure after taking new drug). Use a significance level of α=0.01α=0.01 for the test. Assume that the systolic blood pressure levels are normally distributed for the population of patients both before and after taking the new drug. Patient 1 2 3 4 5 6 7 8 9 Blood pressure (before) 198198 200200 159159 202202 185185 150150 148148 149149 175175 Blood pressure (after) 191191 174174 151151 178178 159159 140140 140140 141141 161161
A researcher is interested in hamster wheel-running activity during the summer versus the winter. She suspects that either the hamsters will run less during the winter to conserve energy or they will run more to keep warm. She records the activity of n = 25 hamsters during June, July, and August and compares their running-wheel revolutions per hour to the activity of the same hamsters during December, January, and February. The data are collected, and the results show an average difference score of MD = 5.7 and a sum of squares of SS = 2,851.44. What is the estimated standard error of the mean difference (SMD) for this study? (two decimals)
T2.10 (3rd posting) Please note that I have question about an answer posted to one of my questions. Specifically, please explain how the value of .79389 is derived. Also, what is the value of the greek letter? Thank you. ================================================= Given that the mean is 9 and variance is 13.5, find the probability that a light bulb will last between 6 and 12 months INCLUSIVE.
Please help me with this! What is the z score for x=50 when mu=40 and sigma=2?
The value for x2 will have an upper tail area of 0.05. There are k = 3 populations and k - 1 = 2 2 | degrees of freedom. Use a table or technology to find x.05- rounding the result to three decimal places. 2 X 0.05 =
An article published by the American Meteorological Society, gives a rating system used to classify Nor'easter storms that frequently hit New England which often cause havoc near the ocean. A severe storm has an average peak wave height of μ=16.4μ feet for waves near the shore. Suppose that a Nor'easter is in progress at the severe storm class rating. Peak wave heights are usually measured from land off piers. Suppose that a reading of 32 waves showed an average wave height of x¯=14.3 feet. Previous reports of severe storms indicate that σ=3.5 feet. Does this information suggest that the storm is decreasing below the severe rating? Use α=0.01 to test the claim.What is the level of significance? State the null and alternate hypotheses. H0:H0:? p σ μ χ Select an answer < = ≠ > H1:H1:? μ p χ σ Select an answer ≠ > = <
A researcher is interested in hamster wheel-running activity during the summer versus the winter. She suspects that either the hamsters will run less during the winter to conserve energy or they will run more to keep warm. She records the activity of n = 25 hamsters during June, July, and August and compares their running-wheel revolutions per hour to the activity of the same hamsters during December, January, and February. The data are collected, and the results show an average difference score of Mp = 5.7 and a sum of squares of SS = 2,851.44. What is the value for degrees of freedom for this repeated-measures t test?
Which combination would lead you to Fail to Reject H0? α = .01 p-value = .005 α = .05 p-value = .051 α = .01 p-value = .009 α = .05 p-value = .048
Answers: 1a) t = 3.033, reject Ho: there is evidence for a significant increase in the number of tremors b) 377.35 to 423.99
A random sample from a normal population has:n = 8, X-bar = 16, and s = 3. Find the 95% PI for asingle new value from the population.
A researcher found that the two groups (n=25 in each group) they tested were significantly different from each other with a t-value of 2.91, which has a corresponding p-value of p=.06. Report the findings in APA number format.
A population of Emotional Quotient scores with μ = 38 and σ = 6 is standardized to create a new population with μ = 50 and σ = 10. Find the new score for a given original score or the old score for a given new score. original score new score X = 26 ? ? X = 65

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