12. Western Pygmy-Possum. The foraging behavior of the west-ern pygmy-possum was investigated in the article “Strategies of aSmall Nectarivorous Marsupial, the Western Pygmy-Possum, in Re-sponse to Seasonal Variation in Food Availability" (Journal of Mam-malogy, Vol. 96, No. 6, pp. 1525–1535) by D. Morrant and S. Petit.The weights of adult male pygmy-possums in Australia are normallydistributed with a mean of 8.5 g and a standard deviation of 0.3 g.a. Sketch the normal curve for the pygmy-possum weights.b. Find the sampling distribution of the sample mean for samples ofsize 4. Draw a graph of the normal curve associated with ĩ.c. Repeat part (b) for samples of size 9.

Let X be the weights of adult male follows normally distributed with a mean of 8.5 and standard…

Answered: 12. Western Pygmy-Possum. The foraging…

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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38. The drug diethylstilbestrol was used for years by women as a nonsteroidal treatment for pregnancy maintenance, but it was banned in 1971 when research indicated a link with the incidence of cervical cancer. The article "Effects of Prenatal Exposure to Diethylstilbestrol (DES) on Hemi- spheric Laterality and Spatial Ability in Human Males" (Hormones and Behavior, 1992: 62-75) dis- cussed a study in which ten males exposed to DES and their unexposed brothers underwent various tests. This is the summary data on the results of a spatial ability test: exposed mean = 12.6 unexposed mean = 13.8 standard error of difference = = 5 Vn Does DES exposure appear to be associated with reduced spatial ability? State and test the appropri- ate hypotheses using a = .05. Does the conclusion. change if a = .01 is used?
8) The following results are from data that were collected from the various high schools around the county. The dependent variable is % OF STUDENTS GOING TO COLLEGE, and the independent variables are: AVERAGE CLASS SIZE, COMBINED SAT SCORES, SPENDING PER STUDENT, AVERAGE TEACHER SALARY, AND % TAKING THE SAT Since the 3 variables AVERAGE CLASS SIZE, SPENDING PER STUDENT, AND AVERAGE TEACHER SALARY are each not significant at the 10% level of significance individually, in order to test to see if as a group they are significant the 3 variables are excluded and another regression is run. The results are as follows: a) At the 10% level of significance, test whether as a group AVERAGE CLASS SIZE, SPENDING PER STUDENT, AND AVERAGE TEACHER SALARY are significant. Be sure to state the null and alternative hypotheses for this hypothesis test.
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A data set has 5,000 labeled examples. If you partition it into training and testing data using 5-fold cross-validation, each training set will contain (). examples and a total of (i) O (1) 1000, (ii) 4000, (ii) 10 O (i) 4000, (i) 1000, (ii) 10 O (1) 1000, (i) 4000, (ii) 5 O () 4000, (i) 1000, (i) 5 examples, each test set will contain (ii) models will be generated.
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