Answer:
a). 3/4 kg de papa
Step-by-step explanation:
Given that,
Patata colocada en balanza = 1 1/4 Kg
Flor de papa total quiere = 2 kg
Encontrar,
Se agregará más peso en la báscula para que sea de 2 kg =?
Procedimiento:
Peso requerido para ser colocado = Peso total - peso colocado
= 2 -
= 2 - 5/4
= (8 - 5)/4
= 3/4 kg
Answer:
a) t = 2.8982
b) 1.826
Step-by-step explanation:
The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So
df = 18 - 1 = 17
99% confidence interval
Now, we have to find a value of T, which is found looking at the t table, with 17 degrees of freedom(y-axis) and a confidence level of ). So we have T = 2.8982. This is the answer for a.
The margin of error is:
M = T*s = 2.8982*0.63 = 1.826
In which s is the standard deviation of the sample.