I need help with d and e

rees in Great Britain at the time of Florence Nightingale? Suppose we have the following information. Mode: In 1851 there were 25,465 nurses in Great Britain. Age range (yr) 20:29 30-39 40-49 50-39 60-69 70-79 604 Midpoint 24.5 34.5 44.5 54.5 64.5 74.5 94.5 Percent of horses 5.3%% 9.69% 19.2% 29.394 24.606 10.29% 1 736 LA USE SALT (a) Using the age midpoints & and the percent of nurses, do we have a valid probability distribution? Explain. O No. The events are indistinct and the probabilities do not sum to i. Yes. The events = et and the probabilities sum to 1. O Yes. The events are distinct and the probabilities do not summ to 1. O No. The events are indistinct and the probabilities sum to 1. (b) use a histogram to graph the probability distribution in part (a). (Because the data table has summarized the data into categories, use SALT to create a bar chart.) 20 845 34.5 64 5 54 5 64 6 745 845 245 38.5 4 5 545 68.5 745 845 240 34.5 46 8 54 6 641 745 845 245 34.9 46 5 54 6 84 5 748 84.5 (c) Find the probebility that a British nurse selected at random in 1851 would be 60 years of age or older. (Round your answer to three decimal places.) 0.365 (c) Compute the expected age # of a British nurse contemporary to Florence Nightingale. (Round your answer to two decimal places.) 45.48 (e) Compute the standard deviation a for ages of nurses shown ribution. (Round your answer to two decimal places. ) 52 21 Need Help? -IN