Mathematics, 12.04.2021 21:30, crosales102
The negative effects of ambient air pollution on children's lung function has been well established, but less research is available about the impact of indoor air pollution. The authors of an article investigated the relationship between indoor air-pollution metrics and lung function growth among children ages 6-13 years living in four Chinese cities. For each subject in the study, the authors measured an important lung-capacity index known as FEV1, the forced volume (in ml) of air that is exhaled in 1 second. Higher FEV1 values are associated with greater lung capacity. Among the children in the study, 516 came from households that used coal for cooking or heating or both. Their FEV1 mean was 1421 with a standard deviation of 325. (A complex statistical procedure was used to show that burning coal had a clear negative effect on mean FEV1 levels.) (a) Calculate and interpret a 95% (two-sided) confidence interval for true average FEV1 level in the population of all children from which the sample was selected. (Round your answers to one decimal place.) ,
Answers: 1
Mathematics, 21.06.2019 14:00, TylerBerk5309
Assume that a population of 50 individuals has the following numbers of genotypes for a gene with two alleles, b and b: bb = 30, bb = 10, and bb = 10. calculate the frequencies of the two alleles in the population’s gene pool.
Answers: 2
Mathematics, 21.06.2019 16:30, jordivivar74
For how answer my question this will be the last question can you answer in math subject
Answers: 2
The negative effects of ambient air pollution on children's lung function has been well established,...
Biology, 08.09.2021 01:00
Mathematics, 08.09.2021 01:00