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. Age ​25-34 ​35-44 ​45-54 ​55-64   Number​ (millions) 23.7 39.8 33.6 24.2 Question content area bottom Part 1 muequalsenter your response here ​(Type an integer or decimal rounded to two decimal places as​ needed.)