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A new drug to treat high cholesterol is being tested by
pharmaceutical company. The cholesterol levels for 18 patients were
recorded before administering the drug and after. The mean
difference in total cholesterol levels (after - before) was -8.603
mg/dL with a standard deviation of 5.449 mg/dL. When creating a 90%
confidence interval for the true average difference in cholesterol
levels by the drug, what is the margin of error?
1)
1.7087
2)
2.2271
3)
2.2342
4)
1.2843
5)
2.1127...
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(1 point) A new drug to lower total cholesterol is being tested.
A study is designed to evaluate the efficacy of the drug. Sixteen
patients agree to participate in the study and each is asked to
take the new drug for 4 weeks. Before starting the treatment, each
patient's total cholesterol level is measured. After taking the
drug for 4 weeks, each patient's total cholesterol level is
measured again. The 99% confidence interval for the change in total
cholesterol (After...
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Part A:
Suppose you work for a pharmaceutical company that is testing a
new drug to treat ulcerative colitis. You conduct a random sample
of 34 patients on the new drug and 14 of them indicated a decrease
in symptoms since starting the drug regimen. You construct a 90%
confidence interval for this proportion to be ( 0.2733 , 0.5502 ).
What is the correct interpretation of this confidence interval?
1)
We are certain that 90% of patients will be...
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9 A group of eight individuals with high cholesterol levels were given a new drug that was designed to lower cholesterol levels. Cholesterol level, in milligrams per deciliter, we measured before and after treatment for each individual, with the followine re Individual Before 283 299 274 284 248 275 293 277 After 215 206 187 212 178 212 192 196 /7, Y a) Construct a 90% confidence interval for the mean reduction in cholesterol level. physician claim that the mean...
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A pharmaceutical company is testing a new drug to increase
memorization ability. It takes a sample of individuals and splits
them randomly into two groups: group 1 takes the drug, group 2
takes a placebo. After the drug regimen is completed, all members
of the study are given a test for memorization ability with higher
scores representing a better ability to memorize. Those 29
participants on the drug had an average test score of 27.92 (SD =
3.215) while those...
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Incorrect Question 6 0/1 pts Provide an appropriate response. A pharmaceutical company wishes to test a new drug with the expectation of lowering cholesterol levels. Ten subjects are randomly selected and pretested. The results are listed below. The subjects were placed on the drug for a period of 6 months, after which their cholesterol levels were tested again. The results are listed below. (All units are milligrams per deciliter.) Test the company's claim that the drug lowers cholesterol levels. Use...
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The following table contains cholesterol levels collected from
non-smoking males. The before cholesterol level is before they
exercised, and the after cholesterol level was taken after the same
subject regularly exercised for two months. It is claimed that the
mean cholesterol level before exercise is greater than that after
exercise. Assume that the population of cholesterol level
difference (before-after) is normally distributed. Test the claim
at the 0.01 level.
Cholesterol Before
176
163
169
169
166
182
Cholesterol After
181...
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In order to test the effectiveness of a drug called XZR designed
to reduce cholesterol levels, 9 heart patients' cholesterol levels
are measured before they are given the drug. The same 9 patients
use XZR for two continuous months. After two months of continuous
use, the 9 patients' cholesterol levels are measured again. The
comparison of cholesterol levels before versus after administering
the drug is an example of testing the difference between:
Select one:
a. Two means from independent populations....
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#4 a pharmaceutical is testing a new medication to see if it
lowers cholesterol. do the hypothesis test to test whether the drug
is effective in lowering cholesterol. Below ae the cholesterol
levels of 6 individuals before and after taking this new medication
let x= 0.05
after med 240
232 235
230 240
244 250 238
before med- 245 250
240 250
240 240
260 245
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1) Investigators want to determine the effectiveness of a new drug in lowering cholesterol. They conduct a small clinical trial in which patients were randomized to receive the new drug or placebo. The total cholesterol was measured after ten weeks on the assigned treatment. The table below shows the results. Sample Size (n) Mean Cholesterol SD New drug 30 198.8 26.7 Placebo 30 215.4 30.3 Is there sufficient evidence to conclude a difference in mean cholesterol for patients on the...