Response: 
Step-by-step analysis:
Based on the information provided, we note
Sample size: n= 50
Given that the population standard deviation is not known, a t-test is employed.
Critical value for the 95 percent confidence interval:
Confidence interval: 
Required 95% confidence interval:
Response:
1.) Subjects = 18 aquariums, each containing mussels
2.) Factors (levels) = temperature (3 levels) and salinity (2 levels)
3.) Treatments include: High salinity at high temperature; High salinity at low temperature; High salinity at medium temperature; Low salinity at low temperature; Low salinity at high temperature; Low salinity at medium temperature.
4.) Response variable = size of mussel produced
5.) Implementing random assignment minimizes the risk of bias and confounding variables.
6.) For replication purposes, every one of the six treatments could be applied to 3 tanks, thus having 3 aquariums designated for each treatment.
7.) This arrangement might introduce a potential location-based effect that could skew the results of our study, thus resulting in a false relationship.
8.) A control experiment with no salt added is not viable since mussels require salt for survival.
Step-by-step explanation:
Responses are explanatory.
Answer:
a) Permutaciones
b) combinaciones
Step-by-step explanation:
a)
Dado que el orden de las 15 obras de arte más importantes es relevante, comenzando por la más popular y luego las que ocupan los lugares 2, 3, 4, y así sucesivamente. Cuando nos ocupamos del "orden de colocación", el tema se refiere a permutaciones.
b)
De un total de 320 obras, se deben "seleccionar" 125 para ser exhibidas, el proceso de selección implica combinaciones en las que el orden de la selección no importa.
Answer: F(x) > 0 in the ranges (-0.7, 0.76) and (0.76, ∞).
I hope this is useful:)
I affirm that all of these statements are correct.
