Smoke-Free Legislation and Asthma Hospital admissions for asthma in children younger than 15 years was studied¹ in Scotland both before and after comprehensive smoke-free legislation was passed in March 2006. Monthly records were kept of the annualized percent change in asthma admissions, both before and after the legislation was passed. For the sample studied, before the legislation, admissions for asthma were increasing at a mean rate of 5.2 % per year. The standard error for this estimate is 0.7% per year. After the legislation, admissions were decreasing at a mean rate of 18.2% per year, with a standard error for this mean of 1.79 %. In both cases, the sample size is large enough to use a normal distribution. ¹Mackay, D., et. al., "Smoke-free Legislation and Hospitalizations for Childhood Asthma," The New England Journal of Medicine, September 16, 2010; 363(12):1139-45. (a) Find a 99% confidence interval for the mean annual percent rate of change in childhood asthma hospital admissions in Scotland before the smoke-free legislation. Round your answers to one decimal place. The 99% confidence interval is i eTextbook and Media % to i (b) Find a 99% confidence interval for the same quantity after the legislation. Round your answers to one decimal place. The 99% confidence interval is i % to i %. %.
Smoke-Free Legislation and Asthma Hospital admissions for asthma in children younger than 15 years was studied¹ in Scotland both before and after comprehensive smoke-free legislation was passed in March 2006. Monthly records were kept of the annualized percent change in asthma admissions, both before and after the legislation was passed. For the sample studied, before the legislation, admissions for asthma were increasing at a mean rate of 5.2 % per year. The standard error for this estimate is 0.7% per year. After the legislation, admissions were decreasing at a mean rate of 18.2% per year, with a standard error for this mean of 1.79 %. In both cases, the sample size is large enough to use a normal distribution. ¹Mackay, D., et. al., "Smoke-free Legislation and Hospitalizations for Childhood Asthma," The New England Journal of Medicine, September 16, 2010; 363(12):1139-45. (a) Find a 99% confidence interval for the mean annual percent rate of change in childhood asthma hospital admissions in Scotland before the smoke-free legislation. Round your answers to one decimal place. The 99% confidence interval is i eTextbook and Media % to i (b) Find a 99% confidence interval for the same quantity after the legislation. Round your answers to one decimal place. The 99% confidence interval is i % to i %. %.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
Please read the passage on Smoke Free first and then answer the questions carefully to get the correct answers.
Transcribed Image Text:(c) Is this an experiment or an observational study?
O Experiment
O Observational study
eTextbook and Media
(d) The evidence is quite compelling. Can we conclude cause and effect?
O Yes
O No
Transcribed Image Text:Smoke-Free Legislation and Asthma
Hospital admissions for asthma in children younger than 15 years was studied¹ in Scotland both before and after comprehensive
smoke-free legislation was passed in March 2006. Monthly records were kept of the annualized percent change in asthma admissions,
both before and after the legislation was passed. For the sample studied, before the legislation, admissions for asthma were increasing
at a mean rate of 5.2 % per year. The standard error for this estimate is 0.7% per year. After the legislation, admissions were
decreasing at a mean rate of 18.2% per year, with a standard error for this mean of 1.79 %. In both cases, the sample size is large
enough to use a normal distribution.
¹Mackay, D., et. al., "Smoke-free Legislation and Hospitalizations for Childhood Asthma," The New England Journal of Medicine,
September 16, 2010; 363(12):1139-45.
(a) Find a 99% confidence interval for the mean annual percent rate of change in childhood asthma hospital admissions in Scotland
before the smoke-free legislation.
Round your answers to one decimal place.
The 99% confidence interval is i
eTextbook and Media
% to i
(b) Find a 99% confidence interval for the same quantity after the legislation.
Round your answers to one decimal place.
The 99% confidence interval is i
% to i
%.
%.
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