1. The Central Intelligence Agency (CIA) has specialists who analyze the frequencies of letters of the alphabet in an atteropt to decipher intercepted messages. In standard English text, the letter o is used at a rate of 7.16%. Find the mean and standard deviation for the number of times the letter o will be found on atypical page of 2800 characters. Round answer to one decimal place.! Round answer to tug decimal places.) Give the interval of usual values for the number of o's appearing on a page of 2800 characters. Enter answer as on interval using square brackets only with whole numbers.) usual values In an intercepted message sent to a foreign country, a page of 2800 characters is found to have the letter o occurring 242 times. Is this unusual? no. it is not unusual yes, it is unusual 2. 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 36 and a standard deviation of 4. Using the empirical rule (as presented in the book), what is the approximate percentage of daily phone calls numbering between 28 and 44? Do not enter the percent symbol. ans B. The table summarizes results from 378 pedestrian deaths that were caused by automobile accidents. Driver Pedestrian Intoxicated? Intoxicated? MYes Yes 53 186 No 2B7 602 if one of the pedestrian deaths is randomly selected. find the probability that the pedestrian was not intoxicated or the driver was intoxicated. Report the answerlas a pendent one d You need not enter the prob #