First of all do the normal hasihng table. Remember search will be succesfull only if you are hased to any one of the * record in table.
Therefore, No of succesfull probes=Total no of probes for each of the record / Total records in table=13/8=1.6
we can be hashed to any of the entry and still we can have a unsuccesfull search,
Therefore No of probes for unsuccesfull search=
Total no of probes from each hash value to make a unsuccesfull search / Total capacity of table
=(8+7+6+5+4+3+2+2+3)/11=3.6