(c) Is the value t = 2.10 statistically significant at the 10% level? At the 5% level? At the 1% level? The value t = 2.10 is significant at the 10% level, but not at the 5% or 1% levels. The value t = 2.10 is significant at the 10%, 5%, and 1% levels. The value t = 2.10 is significant at the 1% level, but not at the 5% or 10% levels. The value t = 2.10 is not significant at the 10%, 5%, or 1% levels