only the final answer in decimals pleasee

a. The probability that any particular code symbol will be erroneously transmit through a communications system is 0.335. In the transmission of symbols, errors occur independently of each other. Suppose a message consisting of 15 symbols is sent. What is the probability that fewer than three symbols are erroneously transmitted? b. It is known that when the ABC aptitude test is applied. qualifiers are generated that follow a normal distribution with average 11 and variance 4. To fill the vacancies of vendors at a fair, 20!] candidates are presented and said test is applied to them. Determine the maximum failing grade if there are only 120 vacancies. c. An analysis indicates that the duration of telephone calls in a certain locality have a normal distribution with a mean of 240 seconds and a variance of moo secondsE. Of 10,000 calls. how many are expected to last less than 13D seconds? Tip. Remember that when you are asked for a quantity, you should think not of a probability but of the "expectation\" or \"average". d. Determine the probabilities that a random variable X takes a value between 12 and 15 gnuen that it has a normal distribution, knowing that: p=lando=5 e. At Buck Cafe, the soda dispenser is set up so that it averages 250 milliliters per cup. If the amount of soft drink served in the glasses follows approximatelv a normal distribution with a standard deviation of 10 milliliters. What proportion of the glasses served will contain between 240 and 255 milliliters of soda