En una planta que manufactura mascarillas de tela para proteccin contra la contaminacin del COVID-19 la gerente de lnea est desechando el 5% de la produccin diaria ya que por diversas razones tiene defectos. Utilice la aproximacin normal para determinar la probabilidad con una muestra de 20 mascarillas:

1.P(no ms de uno (1) sean defectuosos) =

2.P(mas de quince (15) sean defectuosos) =

3.P(entre 1 y 3 mascarillas sean defectuosas =

4.Debo comprar mascarillas de esa fbrica? Justifique su determinacin

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At a plant that manufactures cloth masks for protection against COVID-19 contamination, the line manager is discarding 5% of daily production as it is defective for various reasons. Use the normal approximation to determine the probability with a sample of 20 masks:

1.P (no more than one (1) are defective) =

2.P (more than fifteen (15) are defective) =

3.P (between 1 and 3 masks are defective =

4. Should I buy masks from that factory? Justify your determination