1. Drawing balls without replacement (20 pts). Suppose that we have an urn containing one red ball and n − 1 white balls. Each time we draw a ball at random from the urn without replacement (so after the n-th drawing, there is no ball left in the urn). X i = 1 if the i-th ball is red, 0 otherwise.

BACKGROUND This study examined the characteristics of family practice patients using alternative medicine, the problems that led them to use it, and their satisfaction with its use. METHODS A confidential questionnaire was mailed to 250 randomly selected adults enrolled in a large military family practice clinic, with a final response rate of 71 percent. RESULTS More than 28 percent of pati...

Nine hundred thirty-three persons over 65 years of age, residing in long-term or extended-care facilities in Vancouver, Canada, had tuberculin tests. In addition to PPD-tuberculin, 5 TU and 250 TU, we used PPD-Battey, Candida albicans, mumps, and Trichophyton antigens. Twenty-five percent reacted to 5 TU of tuberculin with reactions of 10 mm or more. There was a progressive, substantial loss of...

*Marshall, K Wayne (A); *Staples, J; +**Damyanovich, A *Department of Surgery, Division of Orthopaedics,The Toronto Arthritis Centre,Toronto Western Hospital and the Unversity of Toronto, Toronto, Ontario, Canada. +**Department of Medical Imaging, Toronto Western Hospital, University of Toronto, Toronto, Ontario, Canada. Toronto Western Hospital, Mc 14-409,\399 Bathurst St.\Toronto, Ontario, Ca...

Address for correspondence: Ann Murphy Endocrine and Diabetes Clinic Toronto General Hospital 200 Elizabeth Street Toronto, Ontario M5G 2C4 Canada Telephone: (416) 340-4800, ext. 4883 Fax: (416) 340-3474 E-mail: [email protected] O B J E C T I V E

For correspondence and reprint requests please contact: Hugh O'Brodovich MD, FRCP(C) Professor of Pediatrics and Physiology, University of Toronto Hospital for Sick Children 555 University Avenue Toronto, Ontario, Canada M5G-1X8 phone: 416-813-5080 fax:416-813-8724 email: [email protected] Page 1 of 40 Articles in PresS. Am J Physiol Lung Cell Mol Physiol (December 27, 2007). doi:10.1...