Americans on average drink 78 gallons of coffee individually each year, with a standard deviation of 13 gallons.  Assume the population of amounts of coffee drank by Americans individually is normally distributed. If a sample of 15 Americans is taken, what is the probability that the sample mean amount of coffee drank individually will be more than 80 gallons? ? ( x̅ > 80 ??????? ) Round your final answer to four decimal places.         = ______________

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.