b. Interpret your interval in context. C. Does your interval contain the value of zero, and what information does this provide about the true mean difference? 7. In the paper "The Relation of Sex and Sense of Direction to Spatial Orientation in an Unfamiliar Environment" (Journal of Environmental Psychology, Vol. 20, pp. 17-28), J. Sholl et al. published the results of examining the sense of direction of male and female students. After being taken to an unfamiliar wooded park, the students were given some spatial orientation tests, including pointing to south, which tested their absolute frame of reference. The statistics below are for the absolute pointing errors, in degrees, of participants in a replication of the original study. Male x = 43.8 Female x = 50.2 s = 19.5 n = 28 s = 23.1 n = 25 a. Construct a 90% confidence interval for the true mean difference in the absolute pointing error between male and female participants. Include the form your interval takes, the setup with the value for either za 2 or ta½2, the order of your subtraction, and the resulting lower and upper bounds of the interval.

b. Interpret your interval in context. C. Does your interval contain the value of zero, and what information does this provide about the true mean difference? 7. In the paper "The Relation of Sex and Sense of Direction to Spatial Orientation in an Unfamiliar Environment" (Journal of Environmental Psychology, Vol. 20, pp. 17-28), J. Sholl et al. published the results of examining the sense of direction of male and female students. After being taken to an unfamiliar wooded park, the students were given some spatial orientation tests, including pointing to south, which tested their absolute frame of reference. The statistics below are for the absolute pointing errors, in degrees, of participants in a replication of the original study. Male x = 43.8 Female x = 50.2 s = 19.5 n = 28 s = 23.1 n = 25 a. Construct a 90% confidence interval for the true mean difference in the absolute pointing error between male and female participants. Include the form your interval takes, the setup with the value for either za 2 or ta½2, the order of your subtraction, and the resulting lower and upper bounds of the interval.

Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015

1st Edition

ISBN:9781680331141

Author:HOUGHTON MIFFLIN HARCOURT

Publisher:HOUGHTON MIFFLIN HARCOURT

Chapter4: Writing Linear Equations

Section: Chapter Questions

Problem 14CR

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Gender and Direction. In the paper “The Relation of Sex and Sense of Direction to Spatial Orientation in an Unfamiliar Environment” (Journal of Environmental Psychology, Vol. 20, pp. 17–28), J. Sholl et al. published the results of examining the sense of direction of 30 male and 30 female students. After being taken to an unfamiliar wooded park, the students were given a number of spatial orientation tests, including pointing to south, which tested their absolute frame of reference. To point south, the students moved a pointer attached to a 360◦ protractor. The absolute pointing errors, in degrees, for students who rated themselves with a good sense of direction (GSOD) and those who rated themselves with a poor sense of direction (PSOD) are provided on the WeissStats site. Can you reasonably apply the two-standard-deviations F-test to compare the variation in pointing errors between people who rate themselves with a good sense of direction and those who rate themselves with a poor…
Gender and Direction. In the paper “The Relation of Sex and Sense of Direction to Spatial Orientation in an Unfamiliar Environment” (Journal of Environmental Psychology, Vol. 20, pp. 17–28), J. Sholl et al. published the results of examining the sense of direction of 30 male and 30 female students. After being taken to an unfamiliar wooded park, the students were given some spatial orientation tests, including pointing to south, which tested their absolute frame of reference. The students pointed by moving a pointer attached to a 360◦ protractor. The absolute pointing errors, in degrees, are provided on the WeissStats site. a. Use the Mann–Whitney test to decide whether, on average, males have a better sense of direction and, in particular, a better frame of reference than females. Perform the test with α = 0.01. b. Obtain boxplots and normal probability plots for both samples. c. You used the pooled t-test to conduct the hypothesis test. Based on your graphs in part (b), which test is…
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