K The following data represent the number of people aged 25 to 64 years covered by health insurance (private or government) in 2018. Approximate the mean and standard deviation for age. μ= 45.20 years (Round to two decimal places as needed.) 5 years (Round to two decimal places as needed.) Age 25-34 35-44 45-54 55-64 Number (millions) 21.4 32.9 35.9 21.9