Use sales data below,

Sale Occurred/100 calls 14 23 18 26 25 28 24 25 23 21 22 26 17 17 23 25 24 19 28 21 19 23 20 24 32 22 31 21 25 20 19 23 22 22 20 16 25 18 27 20 25 14 11 22 28 21 18 28 21 20 21 15 22 16 20 22 17 20 19 22 21 26 25 18 25 16 30 20 22 14 30 25 25 21 33 19 24 18 15 30 19 34 27 26 24 A manager of a telemarketing firm wants to reward her best sales personnel. Each salesperson gets a list of customers to call. The data has been collected on the number of sales made per 100 calls. Now the manager wants to evaluate this data in order to decide what should be considered "exceptional" performance.

Based on this data, what is the expected number of sales (per 100 calls)?

Based on the data for above question, what is the standard deviation of sales per 100 calls?

NOTE: Enter a numerical value only, do not include the $ sign; and round your response to 2 digits after the decimal point. If you do not follow these formatting and rounding rules, you may not receive credit for your answer.