Please help me find answers to these problems

Messages Show Intro/Instruction In a mid-size company, the distribution of the number of phone calls answered each day by each of the 12 receptionists is bell-shaped and has a mean of 35 and a standard deviation of 9. Using the empirical rule, what is the approximate percentage of daily phone calls numbering between 8 and 62? Do not enter the percent symbol. ans = Points possible: 1 Licens This is attempt 1 of 3. Message instructor about this question SubmitShow Intro/Instruct The physical plant at the main campus of a large state university receives daily requests to replace florecent lightbulbs. The distribution of the number of daily requests is bell-shaped and has a mean of 49 and a standard deviation of 11. Using the empirical rule, what is the approximate percentage of lightbulb replacement requests numbering between 49 and 71? Do not enter the percent symbol. ans = Points possible: 1 This is attempt 1 of 3. Message instructor about this question Submiting Prabhnoor Kaur Messages Show Intro/Instructions Engineers must consider the breadths of male heads when designing helmets. The company researchers have determined that the population of potential clientele have head breadths that are Normally distributed with a mean of 6.7 inches and a standard deviation of 1.2 inches. According to the 68-95-99.7 rule, we expect 68% of head breadths to be between and inches. Points possible: 1 License This is attempt 1 of 3. Message instructor about this question Submit