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In a city, there are 320 public schools with a total of 38400 primary 1 students. A large-scale survey covers about 1.25% primary 1 students will be conducted by the Education Department to study student's cognitive development. It is suggested to select a few schools randomly and a six-year continuous observation of all primary 1 students in the selected school will be arranged.
(a) What is the objective of the study?
(b) What is the subject of the study?
(c) What is the population size?
(d) What is the name of the suggested sampling method?
(e) How many schools should be selected so that 1.25% of all public schools would be covered?
(f) A unique identity number will be given to each public school, starting from 001 to 320. Random sample of schools will be selected by systematic sampling method based on the identity number. Suppose 017 is one of the selected schools, write down the identity numbers of the next three schools with simple calculation.
suppose the participants for jury duty are picked from a large pool of county residents with equal numbers of men and
Refer to the Prostate cancer data set in Appendix C.5 and Case Study 16.49. Carr " one-way analysis of covariance of this data set, where the response of interest is PS out a (variable 2), the single factor is Gleason score (variable 9), and the p..
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two-way anova between subjects anova is preformed when you havea. related samples in all cellsb. more than two level in
Then of the 250 students in the school 30 did not attend. Do the new numbers show that the plan increased attendance?
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Perform a visual inspection of the standardised residuals, linking each observation with the relevant assumption. Can the regression model be relied upon
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