The average annual salary for all u. s. teachers is $47,750. assume that the distribution is normal and the standard deviation is $5680. find the probability that a randomly selected teacher earns
a. between $35,000 and $45,000 a year
b. more than $40,000 a year
c. if you were applying for a teaching position and were offered $31,000 a year, how would you feel (based on this information) ?
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