The hypothesis testing results, based on the OLS regression model, indicate that:

Temperature: The pvalue associated with temperature is less than 0.05, suggesting that temperature has a statistically significant relationship with conductivity.

Voltage: Similarly, the pvalue for voltage is less than 0.05, indicating that voltage also has a statistically significant relationship with conductivity.
These findings lead us to reject the null hypothesis, which stated that there is no significant relationship between temperature, voltage, and the conductivity of a semiconductor material. Instead, both temperature and voltage have significant effects on the conductivity.