The new screening found 250 positives, of which 80% were true positives. Full diagnostic testing showed there were 200 diagnosed cases were among the 500 individuals.
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- TDaP is a booster shot that prevents Diphtheria, Tetanus, and Pertussis in adults and adolescents. It should be administered every 8 years for it to remain effective. A random sample of 500 people living in a town that experienced a pertussis outbreak this year were divided into two groups. Group 1 was made up of 132 individuals who had not had the TDaP booster in the past 8 years, and Group 2 consisted of 368 individuals who had. In Group 1, 15 individuals caught pertussis during the outbreak, and in Group 2, 11 individuals caught pertussis. Is there evidence to suggest that the proportion of individuals who caught pertussis and were not up to date on their booster shot is higher than those that were? Test at the 0.05 level of significance. Enter the P-Value - round to 4 decimal placesWhat type of test should be performed?What type of test should be done?
- Why are post hoc tests performed?It is known through Operation Laban Altapresyon that 15% of adults from the Province of Realeza are hypertensive. Princess recently conducted a survey to determine the prevalence of high blood pressure among the towns of the Province of Realeza. Her findings are tabulated below.One of the categories of special education are children who are diagnosed with specific learning disabilities. A major difficulty for children with this diagnosis surrounds the skills of reading. A special education teacher is interested in knowing whether a new reading technique increases reading skills for children diagnosed with specific learning disabilities. She uses the WRAT as a way of measuring reading skills and the average for this test is 55. She takes a random sample of 12 children diagnosed with specific learning disability, employs her reading program with them and finds the following scores on the WRAT: 57, 55, 49, 56, 57, 58, 61, 50, 60, 61, 58, 56. Test the null hypothesis at the .01 level of significance.