Question
In: Statistics and Probability
1. A medical study followed 675 cancer patients who received either a new drug Lafent or...
1. A medical study followed 675 cancer patients who received
either a new drug Lafent or a
standard chemotherapy drug. 76% of those who received Lafent
were still living after
eight months, compared to only 63% of those who received the
standard chemotherapy
drug. Identify the Population, the sample, and any population
parameters or sample
statistics that are given.
Solutions
Expert Solution
Population: The set of all people that the researcher wants information about is the population. For the given problem, the set of all cancer patients who receive either a new drug Lafent or a standard chemotherapy drug is the population.
Sample: Sampe is the subset of population. Samples are drawn inorder to make our study more easy. For the given situation, the selected 675 cancer patients who receive either a new drug Lafent or a standard chemotherapy drug is the sample.
Population Parameter: Population parameter is a function of population values. This can include population mean, population proportion or population variance. For the given problem, there is no population parameter.
Sample Statistic: Sample statistic is a function of sample values. This can include sample mean, sample proportion or sample variance. For the given problem, there are two sample statistics.
- Proportion of cancer patients who received Lafent.
- Proportion of cancer patients who received the standard chemotherapy drug.
Please upvote my answer if you find it helpful. Thanking you.
orchestra answered 1 year agoRelated Solutions
A medical study followed a SAMPLE of 12 heart patients who had received electronic pacemakers. The...
A medical study followed a SAMPLE of 12 heart patients who had
received electronic pacemakers. The time (in months) to the first
electrical malfunction was recorded: 12 16 24 14 22 16 32 14 22 8
20 10 (a) Calculate the estimated standard error of the mean ( two
decimal places ) (5pts) (b)Determine the critical value for a t
space space f o r space alpha space equals space 0.02 space left
parenthesis space 2 space t a i...
In a trial of 300 patients who received 10-mg doses of a drug daily, 54 reported...
In a trial of 300 patients who received 10-mg doses of a drug
daily, 54 reported headaches as a side effect. Construct a 99%
confidence interval for the population proportion of patients who
receive the drug and report headache as a side effect.
A sample of 400 patients from a group medical plan received treatment from either a physician or a nurse practitioner.
A sample of 400 patients from a group
medical plan received treatment from either a physician or a nurse
practitioner. Their medical care was then rated as
satisfactory or unsatisfactory. Answer the questions based
on the results summarized in the table below:
PhysicianNurse PractitionerTotalSatisfactory90161251Unsatisfactory37112149Total127273400 A. Are the events Physician and Nurse-Practitioner
mutually exclusive? Explain why or why not.B. What is the probability that a patient received
treatment that was Satisfactory and from a Physician?C. What is the probability that a patient...
Q2) A drug manufacturer claims that fewer than 10% of patients who take its new drug...
Q2) A drug manufacturer claims that fewer than
10% of patients who take its new drug for treating
Alzheimer’s disease will experience nausea. In a random sample of
500 patients, 47 experienced nausea. Perform a significance test at
the 5% significance level to test this claim.
(a) State the null and alternative hypothesis.
(b) Calculate the test statistic.
(c) Calculate the p-value. Round to 4 decimal places
(d) Make a decision at the 0. 05 significance level to reject Ho...
n a trial of 125 patients who received 10-mg doses of a drug daily, 45 reported...
n a trial of 125 patients who received 10-mg doses of a drug
daily, 45 reported headache as a side effect. Use this information
to complete parts (a) through (d) below.
(a) Obtain a point estimate for the population proportion of
patients who received 10-mg doses of a drug daily and reported
headache as a side effect. p= (Round to two decimal places as
needed.)
(b) Verify that the requirements for constructing a confidence
interval about p are satisfied....
In a clinical trial, 50 patients who received a new medication are randomly selected. It was...
In a clinical trial, 50 patients who received a new medication
are randomly selected. It was found that 10 of them suffered
serious side effects from this new medication. let p denote the
population proportion of patients suffered serious side effects
from this new medication. The 90% confidence interval for p is
about
In a clinical trial, 50 patients who received a new medication are randomly selected. It was...
In a clinical trial, 50 patients who received a new medication
are randomly selected. It was found that 10 of them suffered
serious side effects from this new medication. Let p denote the
population proportion of patients suffered serious side effects
from this new medication.
Find the minimum sample size needed to estimate the population
proportion p with 90% confidence such that the estimate is accurate
within 0.04 of p.
A recent study assessed the long-term quality of life of oral/oropharyngeal cancer survivors who received a...
A recent study assessed the long-term quality of life of
oral/oropharyngeal cancer survivors who received a new type of
treatment. A total of 135 survivors completed a quality of life
questionnaire called the EORTC QLQ-C30. Their mean social
functioning score was 75.0 with a standard deviation of 23.2. For
this scale, a score of 82.6 is what we expect from the population
of people who receive standard treatment. Perform a test to
determine whether the mean score after the new...
A company is research a new drug for cancer treatment. The drug is designed to reduce...
A company is research a new drug for cancer treatment. The drug
is designed to reduce the size of a tumor. You are asked to test
its effectiveness. You proceed to take samples from patients that
are trying the drug. For each patient you take two measurements of
its tumor, before and after the treatment. You want to see if the
tumor's size has decreased. Assume the population distribution is
normal and α = 0.05. The results of the samples...
In a study examining the survival of cancer patients, 100 patients were enrolled at baseline. After...
In a study examining the survival of cancer patients, 100
patients were enrolled at baseline. After one year, 20 patients
were known to have died. Assuming no patients were lost to
follow-up, what was the probability of surviving one year? (OK to
show numerator/denominator)What would be the one-year survival rate
in the previous question if ten patients had been lost to follow-up
during the first year? Use the life table method.
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- b. Do any unions represent employees in Microsoft? Describe which unions are involved. c. Have there been...
- Look up and use each of these Linux commands. (Each command will have two parts) Summarize...
- What was Lincoln 10 percent plan and what problems did it present?
- A cantilever beam 4m long carries a uniform load of 3.5 kN/m over a portion 1.5m...
- Our next optimization comes from using the brilliant Rabin-Karp substring matching algorithm (RK for short), invented...
- Give an example of an experiment to determine the focal length of a concave lens. (Note...
- Search the Internet to find (at least 2 websites) related to the general field of malware....
ADVERTISEMENT