A temperature sensor is equipped with a fuzzification module which uses normalized Gaussian

function as possibility function. When the output from the temperature sensor is $0\mathrm{.}0$ Celsius, the

belief of "being cold" is $100\%.$ When the output is $10\mathrm{.}0$ Celsius, the same belief is $60\%.$ What is the

possibility of believing "being cold" when the output from the temperature sensor is $15\mathrm{.}0$ Celsius?