the sape of the distribution of the time required to get an oil change at  a 10-minute oil change facility is unknown. however, records indicate that the mean time for an oil change is 11.4 minutes,, and the stanard deviation for change time is 3.2 minutes a- what is the probability that a random sample of n =40 oil changes results in a sample mean time of less that 10 minuites? b- suppose the manager agrees to pay each employee a $50 bonus if they meet a certain goal. on a typical saturday the oil change facility will perform 40 oil changes between 10 am and 12 pm treating this a a random sample, what mean oil change time would there be a 10% chance of being at or below? this will be the goal established by the manager

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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.