According to Neilson & Co adults watch an average of 30 hours of a TV a week. Assume the population standard deviation for ‘hours of TV watched per week’ is 12 hours. a. If a random sample of 30 adults is selected, what is the probability the sample mean for hours of TV watched per week is less than 28 hours? b. If a random sample of 30 adults is selected, what is the probability the sample mean for hours of TV watched per week is more than 31 hours? c. If a random sample of 30 adults is selected, what is the probability the sample mean for hours of TV watched per week is between 28 and 31 hours?

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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.