Specifications call for a thermistor to test out at between 9000 and 10,000 ohms at 25Celcius.Ten thermistors are available, and three of these are to be selected for use. LetYdenote thenumber among the three that do not conform to specifications. Find the probability distributionsforY(in tabular form) under the following conditions:

a. Two thermistors do not conform to specifications among the ten that are available.

b. Four thermistors do not conform to specifications among the ten that are available.