Question: In a test to compare the effectiveness of two drugs designed to lower cholesterol levels, 75 randomly selected patients were given drug A and 100

In a test to compare the effectiveness of two drugs designed to lower cholesterol levels, 75 randomly selected patients were given drug A and 100 randomly selected patients were given drug B. Those given drug A reduced their cholesterol levels by an average of 40 with a standard deviation of 12, and those given drug B reduced their levels by an average of 42 with a standard deviation of 15. The units are milligrams of cholesterol per deciliter of blood serum. Can you conclude that the mean reduction using drug B is greater than that of drug A?

Step by Step Solution

★★★★★

3.44 Rating (160 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

X 40 s X 12 n X 75 Y 42 s Y 15 n Y 100 The null and alternate hypotheses a... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Document Format (1 attachment)

944-M-S-H-T (5339).docx

120 KBs Word File

Students Have Also Explored These Related Statistics Questions!

Joseph Berio is a loan officer with the First Bank of Tennessee. Red Brick, Incorporated, a major producer of masonry products, has applied for a short-term loan. Red Brick supplies building material...

Estrus synchronization products are used to bring cows into heat at a predictable time so that they can be reliably impregnated by artificial insemination. In a study of two estrus synchronization...

An infectious disease specialist is using an independent-samples t test to compare the effectiveness of two treatments for the common cold. (a) Write out H 0 and H 1 and (b) Explain what they mean.

A randomized controlled trial was designed to compare the effectiveness of splinting versus surgery in the treatment of carpal tunnel syndrome. Results are given in the table below. The results are...

1. In a test to compare the effectiveness of two drugs designed to lower cholesterol levels, 75 randomly selected patients were given drug A and 100 randomly selected patients were given drug B....

Object 1 WebAssign Welcome, jeremy.guillory@grandcanyon (log out) Friday, November 18 2016 03:11 AM MST Home My Assignments Grades Communication Calendar My eBooks My Ebooks Introduction to the...

Calculate the following Manually and Use R codes to prove if necessary. 1. The caffeine content (in milligrams) of a random sample of 50 cups of black coffee dispensed by a new machine is measured....

1.In a survey people are asked "Which brand of toothpaste do you prefer?" The data gathered from this question would be what type of data? A.categorical B.quantitative C.continuous 2.A student is...

Choose the correct answer. 1. A scientist wants to test whether participating in support groups will have an effect on the mood of people with depression. Her expectation is that participation will...

1. The figure below shows air at steady state, entering a nozzle at a pressure of 250 kPa and a temperature of 77C with a velocity of 80 m/s. The air exits the nozzle at a pressure of 100 kPa and a...

What is meant by interest-rate parity? Does it work?

Write down the coordinates of each point shown in the figure. * E- 2 3 *A -3- XF *D

Melvic Ltd. has signed a contract to lease a store from Glen Caper Ltd. nearby for a non-cancel lable period of three years. The arrangement also provides an option for Melvic Ltd. to renew the lease...

Want a brief explanation Why is simple diffusion insufficient for transportation in trees?

Calculate the limited expansion centered on the origin, of order n for What is the value of ? f(x) = cosh(x) + sinh(x)

A buyer for a chain of department stores must place orders for athletic shoes 6 months before the shoes will be sold in the stores. At this time, the buyer must determine the order size for a...

The article cited in Exercise 19 provides measures of electrical conductivity (in S/cm). The results are presented in the following table. Can a one-way analysis of variance be used to determine...

1. A set of 50 observations are supposed to have come from an exponential distribution with the pdf B exp(-x/B) for 0

This is the second-choice question. please pick one of the two choice questions to do. Please indicate which you plan on doing and if you uploaded your solutions in the written section. You are...

2) When it comes to restatements, why is it important to restate the income statement into the multi step format? 3) Assume you are an investor in various equity securities (stocks) and you have full...