El caudal promedio del río chillón alcanzo 1,74 m3/s, cifra que representó un aumento de 5, 5% con relación al mes de agosto de
1 answer:
El caudal del río Chillón en agosto de 2.020 fue de 1,649 metros cúbicos por segundo.
Una lectura atenta al enunciado de la pregunta indica que el caudal <em>promedio</em> es 5,5 % mayor que el caudal del mes de agosto de 2.020. Por la definición de porcentaje tenemos la siguiente relación entre las dos cantidades:
En consecuencia, el caudal del río Chillón es igual a:
El caudal del río Chillón en agosto de 2.020 fue de 1,649 metros cúbicos por segundo.
Invitamos cordialmente a consultar este problema sobre porcentajes: brainly.com/question/18546712
You might be interested in
Answer:
The mean commute time in the U.S. is less than half an hour.
Step-by-step explanation:
In this case we need to test whether the mean commute time in the U.S. is less than half an hour.
The information provided is:
(a)
The hypothesis for the test can be defined as follows:
<em>H</em>₀: The mean commute time in the U.S. is not less than half an hour, i.e. <em>μ</em> ≥ 30.
<em>Hₐ</em>: The mean commute time in the U.S. is less than half an hour, i.e. <em>μ</em> < 30.
(b)
As the population standard deviation is not known we will use a t-test for single mean.
Compute the test statistic value as follows:
Thus, the test statistic value is -1.58.
(c)
Compute the p-value of the test as follows:
*Use a t-table.
The p-value of the test is 0.061.
Decision rule:
If the p-value of the test is less than the significance level then the null hypothesis will be rejected and vice-versa.
p-value = 0.061> α = 0.05
The null hypothesis will not be rejected at 5% level of significance.
Thus, concluding that the mean commute time in the U.S. is less than half an hour.