A pharmaceutical company has developed a new drug which they believe will reduce cholesterol levels. 21 patients were randomly assigned to the treatment group (receive new drug). Another 23 patients were assigned to the control group (received existing drug). The "before" cholesterol value for each patient was recorded, then the "after" cholesterol value, and finally the total cholesterol reduction for each patient was recorded. Here is the data: x(bar) Treatment group (new drug) 21 22.45 7.99 Control group (old drug) 23 18.52 7.15 Calculate a 90% confidence interval for the difference in reduction of cholesterol between these two drugs. Use Option 1 (technology) for degrees of freedom and round to three decimal places. The upper bound of confidence interval is:

A pharmaceutical company has developed a new drug which they believe will reduce cholesterol levels. 21 patients were randomly assigned to the treatment group (receive new drug). Another 23 patients were assigned to the control group (received existing drug). The "before" cholesterol value for each patient was recorded, then the "after" cholesterol value, and finally the total cholesterol reduction for each patient was recorded. Here is the data: x(bar) Treatment group (new drug) 21 22.45 7.99 Control group (old drug) 23 18.52 7.15 Calculate a 90% confidence interval for the difference in reduction of cholesterol between these two drugs. Use Option 1 (technology) for degrees of freedom and round to three decimal places. The upper bound of confidence interval is:

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Description: A pharmaceutical company has developed a new drug which they believe will reduce cholesterollevels. 21 patients were randomly assigned to the treatment group (receive new drug). Another 23patients were assigned to the control group (received existin

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Concept explainers

Unitary Method

The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products.

Speed, Time, and Distance

Imagine you and 3 of your friends are planning to go to the playground at 6 in the evening. Your house is one mile away from the playground and one of your friends named Jim must start at 5 pm to reach the playground by walk. The other two friends are 3 miles away.

Profit and Loss

The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.

Units and Measurements

Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experiments to set up the devices.

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Question

A pharmaceutical company has developed a new drug which they believe will reduce cholesterol
levels. 21 patients were randomly assigned to the treatment group (receive new drug). Another 23
patients were assigned to the control group (received existing drug). The "before" cholesterol value
for each patient was recorded, then the "after" cholesterol value, and finally the total cholesterol
reduction for each patient was recorded.
Here is the data:
n
x(bar)
Treatment group (new drug)
21
22.45
7.99
Control group (old drug)
23
18.52
7.15
Calculate a 90% confidence interval for the difference in reduction of cholesterol between these
two drugs. Use Option 1 (technology) for degrees of freedom and round to three decimal places.
The upper bound of confidence interval is:

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