Question

In: Math

An investigator wants to test whether exposure to secondhand smoke before 1 year of life is...

An investigator wants to test whether exposure to secondhand smoke before 1 year of life is associated with development of childhood asthma (defined as asthma diagnosed before 5 years of age). Give two possible study designs and indicate the pros and cons of each. Then, provide your recommendation for the most efficient design.

Solutions

Expert Solution

milcah answered 5 months ago
Next > < Previous

Related Solutions

NEWS WIRE EXTERNALITIES Secondhand Smoke Kills More Than 600,000 People a Year: Study Secondhand smoke globally...
NEWS WIRE EXTERNALITIES Secondhand Smoke Kills More Than 600,000 People a Year: Study Secondhand smoke globally kills more than 600,000 people each year, accounting for 1 percent of all deaths worldwide, according to a new study. Researchers estimate that annually secondhand smoke causes about 379,000 deaths from heart disease, 165,000 deaths from lower respiratory disease, 36,900 deaths from asthma, and 21,400 deaths from lung cancer. Children account for about 165,000 of the deaths. Forty percent of children and 30 percent...
NEWS WIRE EXTERNALITIES Secondhand Smoke Kills More Than 600,000 People a Year: Study Secondhand smoke globally...
NEWS WIRE EXTERNALITIES Secondhand Smoke Kills More Than 600,000 People a Year: Study Secondhand smoke globally kills more than 600,000 people each year, accounting for 1 percent of all deaths worldwide, according to a new study. Researchers estimate that "passive smoking" causes about 379,000 deaths from heart disease, per year, worldwide. Passive smoking also kills 165,000 people each year due to lower respiratory disease, 36,900 deaths from asthma, and 21,400 deaths from lung cancer. Children account for about 165,000 of...
An investigator wants to estimate the proportion of freshman at his university who currently smoke cigarettes....
An investigator wants to estimate the proportion of freshman at his university who currently smoke cigarettes. How many freshman should be involved in the study to ensure that a 90% confidence interval estimate of the proportion is within 0.04 of the true proportion?
An investigator wants to test the effectiveness of a new weight loss medication at reducing BMI...
An investigator wants to test the effectiveness of a new weight loss medication at reducing BMI (kg/m2). Suppose the following table represents the results from a SRS of individuals enrolled in the study. Assume a normal approximation is acceptable. (α=.05)(6 points) Patient BMI Pre-Test (kg/m2) BMI Post-Test (kg/m2) A 30.5 26.5 B 32.8 28.5 C 35.6 28.4 D 34.7 25.7 E 33.9 29.4 A) What type of test design is this? B) Write our your null and alternative hypotheses. H0:µd=____  ,Ha:...
Explain in detail how you would go about scientifically determining whether exposure to cigarette smoke causes...
Explain in detail how you would go about scientifically determining whether exposure to cigarette smoke causes asthma attacks in children under the age of five. Your answer should explain what type of study you are conducting, as well as including information about your sample size. Your answer must clearly explain your sample size, the type of study performed (randomized, etc.), what limitations your study might have, and why you think your study will accurately measure how smoke affects children.
In R code please: Test the hypothesis whether the students smoking habit (Smoke) is independent of...
In R code please: Test the hypothesis whether the students smoking habit (Smoke) is independent of their exercise level (Exer) in dataset survey (MASS package) at 0.05 significance level. (Please include how to download the MASS package. Thanks.)
An educator wants to determine whether early exposure to school will affect IQ. He enlists the...
An educator wants to determine whether early exposure to school will affect IQ. He enlists the aid of the parents of 12 pairs of preschool-age identical twins who agree to let their twins participate in his experiment. One member of each twin pair is enrolled in preschool for 2 years, while the other member of each pair remains at home. At the end of the 2 years, the IQs of all the children are measured.   Research Hypothesis: Null Hypothesis: Statistical...
Problem 1: An investigator in a university wants to know the mean math SAT score among...
Problem 1: An investigator in a university wants to know the mean math SAT score among all the applications to the university this year (denoted by μ). A random sample of n = 50 applications are selected. The sample mean is X = 530 and the sample variance is s2 = 8100. a. Consider the hypothesis testing problem: H0 : μ = 520 against Ha : μ ̸= 520. Use a significance level of α = 0.05. Compute the test...
1. A university wants to estimate the proportion of its students who smoke regularly. Suppose that...
1. A university wants to estimate the proportion of its students who smoke regularly. Suppose that this university has N = 30, 000 students in total and a SRSWOR of size n will be taken from the population. a) If the university wants the proportion estimator ˆp to achieve the precision with tolerance level e = 0.03 and risk α = 0.1. Estimate the minimal sample size needed for this estimation. (z0.1 = 1.28, z0.05 = 1.65) b) Suppose that,...
A restaurant wants to test the quality of service before training and after training. Their objective...
A restaurant wants to test the quality of service before training and after training. Their objective is to determine if the training is effective in improving their service standards. The staff were evaluated on a scale of 1 to 10 with1 being very bad and 10 being very good. Using an appropriate test determine if the training was effective in achieving its objective. The following table displays the results of the study: Participant 1 2 3 4 5 6 After...
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT