The mean amount purchased by a typical customer at Churchill's grocery store is $21.50 with a standard deviation of $7.00. Assume the distribution of amounts purchased follows the normal distribution. For a sample of 44 customers, answer the following questions;  A) What is the likelihood the sample mean is at least $24.50?  B) What is the likelihood the sample mean is greater than $19.50 but less than $24.50?  C) Within what limits will 90% of the sample means occur?

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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.