what will the scores be between?

Question

A career counselor gives all of her new clients a measure of career maturity that scores people on a 100 point scale from 1-100. After collecting data on over 100 clients, she notices that the scores are normally distributed. The mean score is 65, indicating a level of moderate career maturity. The standard deviation of scores is 10. Based on this information, she would expect 68% of her clients will have scores between?

Answer 1

55 to 75

which is plus or minus one standard deviation from the mean