A single data point is never "statistically significant" on its own. What you probably mean to ask is whether its standard score is likely assuming a standard n

A single data point is never "statistically significant" on its own. What you probably mean to ask is whether its standard score is likely assuming a standard normal distribution of values [0]. Without running the numbers, I would guess not. [0] https://en.wikipedia.org/wiki/Standard_score https://en.wikipedia.org/wiki/Standard_score