Four siblings are 3, 4, 5, and 8 years of age. Complete parts (a) through (e) below. Question content area bottom Part 1 a. Calculate the mean of the children at their current ages. 5 years old (Round to the nearest tenth as needed.) Part 2 b. Without doing any calculation, indicate whether the mean age in 10 years will be larger, smaller, or about the same as the mean of the current ages. Choose the correct answer below. A. The mean will be larger. Your answer is correct.B. The mean will be smaller. C. The mean will be about the same. D. The mean cannot be approximated without calculations. Part 3 Check your answer by calculating the mean in 10 years. 15 years old (Round to the nearest tenth as needed.) Part 4 c. Calculate the standard deviation of their current ages. 2.2 years (Round to the nearest tenth as needed.) Part 5 d. Without doing any calculation, indicate whether the standard deviation of the ages in 10 years will be larger, smaller, or the same as the standard deviation of their current ages. Choose the correct answer below. A. The standard deviation will be smaller. B. The standard