Instruction 12 -Referring to Instruction 12

question 115

Short Answer

Instruction 12.39
The managers of a brokerage firm are interested in finding out if the number of new customers a broker brings into the firm affects the sales generated by the broker. They sample 12 brokers and determine the number of new customers they have enrolled in the last year and their sales amounts in thousands of dollars. These data are presented in the table that follows.
$$\begin{array} { | l | l | l | } \hline \text { Broker } & \text { Clients } & \text { Sles } \\\hline 1 & 27 & 52 \\\hline 2 & 11 & 37 \\\hline 3 & 42 & 64 \\\hline 4 & 33 & 55 \\\hline 5 & 15 & 29 \\\hline 6 & 15 & 34 \\\hline 7 & 25 & 58 \\\hline 8 & 36 & 59 \\\hline 9 & 28 & 44 \\\hline 10 & 30 & 48 \\\hline 11 & 17 & 31 \\\hline 12 & 22 & 38 \\\hline\end{array}$$
-Referring to Instruction 12.39,suppose the managers of the brokerage firm want to obtain a 99% confidence interval estimate for the mean sales made by brokers who have brought into the firm 24 new customers.The t critical value they would use is __________.

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Definitions:

Carbohydrates

Organic compounds, including sugars, starch, and cellulose, which serve as a major energy source in the diet of animals.

LDL Receptors

Proteins on cell surfaces that bind and internalize low-density lipoprotein (LDL) particles for degradation.

Serum Cholesterol

The total amount of cholesterol present in the serum portion of the blood, which is a key indicator in assessing an individual's risk for cardiovascular diseases.

Endocytosis

Bulk uptake of material through the cell membrane.