According to medical data, the ages at which patients have their first hip replacement surgery follows a normal distribution. The average age for a first hip replacement is 55 years of age, with a standard deviation of 6.5 years. Therefore, doctors can expect 95% of their hip replacement surgery patients to be between what ages?

Group of answer choices

48.5 - 61.5

42 - 61.5

35.5 - 74.5

42 - 68