Answer:
20-30 seconds
Explanation:
Samir meets a woman at a party. She gives Samir her telephone number so he can call her. Samir has about 20-30 seconds to write down the number before his short-term memory store is depleted. The short-term memory can hold about 7 bits of information for about 20-30 seconds before it is depleted or else enforced via repetition which can transfer the information to the long-term memory.
