A report indicates that teacher’s total annual pay

(including bonuses) in Toronto, Ontario, has a mean of

$61,000 and standard deviation of $10,000 (Canadian dollars).

Suppose the distribution has approximately a bell shape.

(a) Give an interval of values that contains about (i) 68%,

(ii) 95%, (iii) all or nearly all salaries.

(b) Would a salary of $100,000 be unusual?Why?