Question
In: Statistics and Probability
1/ In clinical trials of 3066 patients taking treatment A, 790 reported nausea as a side...
1/ In clinical trials of 3066 patients taking treatment A, 790 reported nausea as a side effect. In clinical trials of 1013 patients taking treatment B, 216 reported nausea as a side effect. Researchers want to know whether the difference in sample proportions is statistically significant. Use the "Randomization test for two proportions" applet in StatCrunch with a seed of 30102. Obtain exactly 3000 runs of the applet. What is the P-value based this randomization?
P-value= (Round to four decimal places as needed.)
2/ A researcher wishes to estimate the average blood alcohol concentration (BAC) for drivers involved in fatal accidents who are found to have positive BAC values. He randomly selects records from 82 such drivers in 2009 and determines the sample mean BAC to be 0.15 g/dL with a standard deviation of 0.080 g/dL.
Determine and interpret a 90% confidence interval for the mean BAC in fatal crashes in which the driver had a positive BAC. Select the correct choice below and fill in the answer boxes to complete your choice. (Use ascending order. Round to three decimal places as needed.)
The researcher is % confident that the population mean BAC is between and for drivers involved in fatal accidents who have a positive BAC value.
somebody pleaaaaaaase answer these two questions thanks alot!
Solutions
orchestra answered 2 years agoRelated Solutions
Clinical trial (a) There are several methods to assign treatments to patients in comparative clinical trials....
Clinical trial
(a) There are several methods to assign treatments to patients
in comparative clinical trials. Commonly used methods include pure
randomization ,permutted blocks and within strata.
Briefly describe each of these technique for which the
institution ,the sex,and age of the patient (under 50 years of age
versus over 50 years of age) are factors that could be taken into
account at the time of randomization.
1- In a clinical trial, 20 out of 600 patients taking a prescription drug complained of...
1- In a clinical trial, 20 out of 600 patients taking a
prescription drug complained of flulike symptoms. Suppose that it
is known that 5.5 % of patients taking competing drugs complain of
flulike symptoms. Is there sufficient evidence to conclude that
less than 5 % of this drug's users experience flulike symptoms as a
side effect at the α=0.04 level of significance?
What is the critical value?
2-In a recent survey, 56 % of employed adults reported that
basic...
Side Effects for Migraine Medicine In clinical trials and extended studies of a medication whose purpose...
Side Effects for Migraine Medicine
In clinical trials and extended studies of a medication whose
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2% of the patients in the study experienced weight gain as a side
effect. Suppose a random sample of 600 users of this medication is
obtained.
Explain why you can use normal approximation to binomial
distribution to approximate the probabilities below.
Approximate, up to 4 decimal digits, the probability that 20 or
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Side Effects for Migraine Medicine In clinical trials and extended studies of a medication whose purpose...
Side Effects for Migraine Medicine
In clinical trials and extended studies of a medication whose
purpose is to reduce the pain associated with migraine headaches,
2% of the patients in the study experienced weight gain as a side
effect. Suppose a random sample of 600 users of this medication is
obtained.
Explain why you can use normal approximation to binomial
distribution to approximate the probabilities below.
Approximate, up to 4 decimal digits, the probability that 20 or
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Clinical trials involved treating flu patients with Tamiflu, which is a medicine intended to attack the...
Clinical trials involved treating flu patients with Tamiflu,
which is a medicine intended to attack the influenza virus and stop
it from causing flu symptoms. Among 724 patients treated with
Tamiflu, 72 experienced nausea as an adverse reaction. (a)
Construct a 95% confidence interval for the (population) proportion
of patients treated with Tamiflu that experienced nausea as an
adverse reaction.
(b) It is reported that the rate of nausea among patients
treated with Tamiflu is greater than 7%. Using the...
In clinical trials of the allergy medicine Clarinex (5 mg), it was reported that 50 out...
In clinical trials of the allergy medicine Clarinex (5 mg), it
was reported that 50 out of 1655 individuals in the Clarinex group
and 31 out of 1652 individuals in the placebo group experienced dry
mouth as a side effect of their respective treatments. Test the
hypothesis that a greater proportion of individuals in the
experimental group experienced dry mouth compared to the
individuals in the control group at the α=0.01 level of
significance.
Null Hypothesis:
Alternate Hypothesis:
P-value:
Conclusion:...
1. In a clinical trial, 22 out of 855 patients taking a prescription drug daily complained...
1. In a clinical trial, 22 out of 855 patients taking a
prescription drug daily complained of flulike symptoms. Suppose
that it is known that 2.2% of patients taking competing drugs
complain of flulike symptoms. Is there sufficient evidence to
conclude that more than 2.2% of this drug's users experience
flulike symptoms as a side effect at the a= 0.01level of
significance?
a. Because np0(1-p0) = BLANK (<,>,=,≠) 10, the sample size
is (less than, grater than) 5% of the...
A drug is used to help prevent blood clots in certain patients. In clinical trials, among 4244 patients treated with the drug
A drug is used to help prevent blood clots in certain patients.
In clinical trials, among 4244 patients treated with the drug, 154 developed the adverse reaction of nausea. Construct a 99% confidence interval for the proportion of adverse reactions.a) Find the best point estimate of the population proportion
p.nothing(Round to three decimal places as needed.)b) Identify the value of the margin of error E.E=nothing(Round to three decimal places as needed.)c) Construct the confidence interval.nothing<p<nothing(Round to three decimal places as...
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