B Homework#7-Basic Stats BeX B Homework#7 problem ndards (see Table 8.2), this is a medium treatment cflect. b. Using the standard four-step procedure, conduct a two-tailed hypothesis test with a =...

I need assistance with #6 A and B

Extracted text: B Homework#7-Basic Stats BeX B Homework#7 problem ndards (see Table 8.2), this is a medium treatment cflect. b. Using the standard four-step procedure, conduct a two-tailed hypothesis test with a = .05 to evaluate the effect of studying from an electronic screen. 7. Babcock and Marks (2010) review survey data from 2003-2005, and obtained an average of u per week spent studying by full-time students at four-year colleges in the United States. To determine whether this average has changed in recent years, a researcher selected a sample of n college students and obtained an average of M hours. If the standard deviation for the distribution is 4.8 hours perweck. does this sample indicate a significant change in the number of hours spent study- ng? Use a tvwo-tailed test with re 14 hours 64 of today's 12.5 8. Childhood participation in sports, cultural groups. and Southeroups appeirs to be related to improved selt estecmfor dolescents (NL Gee Willims. Ilowdef- Chapman Marn.skawach 20un) Inareprsental


Extracted text: a. Increasing the difference between the sample mean and the original population mean b. Increasing the population standard deviation c. Increasing the number of scores in the sample 8. Childhood youth gro esteem for Chapman, tive study, history of self-esteem tion of adol a normal di standard de 6. Ackerman and Goldsmith (2011) report that students who study from a screen (phone, tablet, or comput- er) tended to have lower quiz scores than students who studied the same material from printed pages. To test this finding, a professor identifies a sample of n 16 students who used the electronie ver- sion of the course textbook and determines that this sample had an average score of M 72.5 on the final exam. During the previous three years, the final exam scores for the general population of students taking the course averaged p 77 with a standard deviation of o 8 and formed a roughly normal distribution. The professor would like to use the sample to determine whether students studying from an electronic screen had exam scores that are participation a. Does this clude that are signif populatio b. Compute difference c. Write a se hypothesis would app significantly different from those for the general population. a. Assuming a two-tailed test, state the null hypoth- esis in a sentence that includes the two variables being examined. 9. The psycholo curriculum by offerings. To oong20.Cengage Cea ng A nts Resered Sytecopd scanned n du 3