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DnlineH'ianna.D5., an online pharmacy, promise. to deliver prescriptions to ils customers for free. |[llnline oonsthations with their pharmacists and doctors are also offered. Recently, the company's internal audit department selected a random sample of 40 prescriptions issued thmughout the system. The objective of the sampling was to Etimate the average dollar value of all prescriptions issued by the companyt The sampling raulted in a sample mean of $51.99 and the standard deviation of 511.20. Use this sample information to nd a 94% oonl'idence interval for the true average sales value for prescriptions issued by DnlineFl'iannaLA. Assume that the values are approximately normally distributed and use the 1 distribution. [an What is a; [degrees of freedom} in this case? if = C] For part lb], round 1your answer to 3 decimal places. For part in], round your answers to 2 decimal places. [b] Find t [b} What is the 94% oondehoe interval for the true average sales value for prescriptions issued by DnlinthannaLA? Questim Help: B Message instructor Add Work > Next |