I need some help!

The histogram below represents the age at death of a large population. The height of each block is given in parentheses. 2.5 (2.5) 2.0 1.5 (1.5) (1.25) % per age L.O (1) (1) 0.5 (0.5 0.25 0 10 20 30 40 50 60 70 80 90 100 Age at death a. What percent of the population died in the 40 - 70 interval? 35 % (Enter a number. Do not include the % sign.) Submit Answer | Answer Submitted: Your final submission will be graded when the time limit is reached. Tries 1/99 Previous Tries b. What is the median age of death? years Submit Answer | Tries 0/99 c. The average is the median. Submit Answer Tries 0/99 d. What age is at the 75th percentile? years Submit Answer Tries 0/99e. {3 pts)1f5 years were added to everyone's life span how would it affect the average, median and SD of the histogram above? I. The average would... 0 Increase 0 decrease 0 stay the same 0 Not enough info given Submit Answer Tries 0/99 II. The median would... 0 increase 0 decrease 0 stay the same 0 Not enough info given Submit Answer Tries 0/99 III. The SD would... 0 increase O decrease 0 stay the same 0 Not enough info given Submit Answer Tries 0/99 Question 4 (3 points) According to our survey data, the ages of Stat 200 students' mothers roughly follow the normal curve with Average = 51 years and SD = 4 years. Use the normal approximation to answer the following questions. (You may "round" Z scores and percentages to fit the closest line on the Normal table and you may round percentages on the table to the nearest whole number.) a. What percentage of the mothers are over 57? % (Do not include the % sign.) Submit Answer Tries 0/99 b. If a mother is 0.5 SD's below average in age. How old is she? years Submit Answer Tries 0/99 c. If a mother is in the 84th percentile how old is she? years Submit Answer Tries 0/99