most exhibition shows open early in the morning and closes late in the evening. a study of Saturday arrival times showed that the average time was 3 hours and 48 minutes after the doors opened, and the standard deviation was estimated to about 52 minutes. assume the arrival times follow a normal distribution.  a) what time after the doors opened will 90% of the people who are coming to the Saturday show have arrived? b) what time after the doors open will only 15% of the people who are coming to the Saturday show will have arrived? c) do you think that the probability distribution of arrival times for Friday might be different from Saturday? explain why?

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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.