10.2 In a hospital, the number of births observed for each month of a certain year were as follows: January 95 February 105 March 95 April 105 May 90 June 95 July 105 August 110 September 105 October 100 November 95 December 100 If α = 0.01, is there any reason to believe that the number of births is not evenly distributed over all months of the year? What is the value of p?

10.2 In a hospital, the number of births observed for each month of a certain year were as follows: January 95 February 105 March 95 April 105 May 90 June 95 July 105 August 110 September 105 October 100 November 95 December 100 If α = 0.01, is there any reason to believe that the number of births is not evenly distributed over all months of the year? What is the value of p?

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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Every year, the studants at a school are given a musical aptitude test that rates them from 0 (no musical aptitude) to 5 (high musical aptitude). This year's results were: Aptitude Score 012345 0 3 554 4 Frequency Round answers to two decimals, if necessary The average (mean) aptitude score: The median aptitude score:
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3
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Suppose that Mary, Gary, and Larry have been asked to randomly sample 100 patients' visit records from a file of 2000 patient records and record the amount of time the attending physician spent with each patient. Gary suggests the time of year during which the patient was seen may be a confounding variable and strongly advises dividing the year into quarters (Jan - Mar, Apr-Jun, Jul-Sep, Oct- Dec) and randomly selecting 25 patient records from each quarter. Which of the following best describes Gary's sampling plan? (A) A simple random sample (B) A systematic random sample (C) A stratified random sample (D) A cluster sample (E) A convenience sample