Un tanque de almacenamiento de agua instalado en una comunidad tiene forma de prisma triangular y una capacidad de 8 000 litros , su base mide 2.5 m por 2 m. ¿Qué altura tiene este tanque?

¿Qué cantidad de agua contendría si solo llegara el agua a una altura de 75 cm?

An automobile assembly line operation has a scheduled mean completion time, μ, of 12 minutes. the standard deviation of completion times is 1.6 minutes. it is claimed that, under new management, the mean completion time has decreased. to test this claim, a random sample of 33 completion times under new management was taken. the sample had a mean of 11.2 minutes. assume that the population is normally distributed. can we support, at the 0.05 level of significance, the claim that the mean completion time has decreased under new management? assume that the standard deviation of completion times has not changed.