In assessing the effecitveness of a new treatment: 70% of all participants entering the study will...
In assessing the effecitveness of a new treatment: 70% of all participants entering the study will never successfully get positive results. Among the remaining individuals who could potentially get positive results: there is a 50% probability of success on any given attempt, independent of the results of any previous attempts.
What fraction of all participants in the study will success on the first attempt?
What fraction of participants who fail to success on the first attempt and who make a second attempt will success on the second attempt?
Homework Answers
P(P) = 0.3, P(P') = 0.7
P(S|P) = 0.3*0.5 = 0.15
What fraction of all participants in the study will success on
the first attempt?
P(S|P) = 0.3*0.5 = 0.15
What fraction of participants who fail to success on the first
attempt and who make a second attempt will success on the second
attempt?
Required probability = P(S'|P)*P(S|P)
= (1-0.15)*0.15 = 0.1275
Add Answer to:
In assessing the effecitveness of a new treatment: 70% of all
participants entering the study will...
Suppose you were interested in how good someone was at surfing. You find that, 54% of...
Suppose you were interested in how good someone was at surfing. You find that, 54% of the time, they successfully do a particular trick. 8% of the time, they do the trick with small mistakes. The rest of the time they fail to do the trick at all. - In any one attempt to do the trick, what is the probability that this person will complete it, either perfectly or with small mistakes? - Assume that surfing success rate in...
An investigator initiated a clinic-based cohort study in 1997 to investigate factors associated with HIV seroconversion...
An investigator initiated a clinic-based cohort study in 1997 to investigate factors associated with HIV seroconversion in a population-based sample of n=489 adults between 35-60 years old. The study was launched on January 1, 1997 and participants were asked to return for follow-up visits on a yearly basis. - at the baseline visit, n=43 participants tested HIV-seropositive among the sample of 489. - at the first follow-up visit, beginning in January 1, 1998, among those who were HIV-seronegative at baseline,...
Depression is a common disease among young and older adults. Although it can be treated, non-adherence...
Depression is a common disease among young and older adults. Although it can be treated, non-adherence is very common among individuals of different ages. The aim of the present paper is to review and summarize research findings regarding depression among young and older adults, with a special focus on the phenomenon of treatment non-adherence among young and older adults with depression. The first section of the review focuses on describing the characteristics of depression in young and older adults. The...
6) It has been study. One een levels of treatment for the new drug will be used in the 2 study. One group will be administered the new phase of the drug once per day and a second group twic...
6) It has been study. One een levels of treatment for the new drug will be used in the 2 study. One group will be administered the new phase of the drug once per day and a second group twice per day. You select two SRSs of 19 and 21 individuals who have been diagnosed as having high n diagnosed adrug twice per administered the new drug once per dayad cholest total cholesterol. Results are summarized in the table below....
14. Select the number of participants in the Beck & Watson study Group of answer choices...
14. Select the number of participants in the Beck & Watson
study
Group of answer choices
8
13
22
35
15. Beck & Watson determined their final sample size via
Group of answer choices
coding
saturation
triangulation
ethnography
16.Through their study, Beck & Watson determined
Group of answer choices
after a traumatic birth, subsequent births have no troubling
effects
after a traumatic birth, subsequent births brought fear, terror,
anxiety, and dread
Subsequent Childbirth After a Previous Traumatic Birth Beck, Cheryl...
Suppose Tom, an education researcher, wishes to determine the effects of mandatory study days prior to...
Suppose Tom, an education researcher, wishes to determine the effects of mandatory study days prior to exams upon students in his state. Tom randomly selects 400 of the approximately 85,000 undergraduate students in his state and divides them into two groups of equal size. The first 200 students take a standardized chemistry examination and are graded as either passing or failing. The second 200 students take the same exam but participate in an exam study day immediately prior to the...
Questions 33-35. Based on the vignette below, answer the following questions. Vignette II. You become very...
Questions 33-35. Based on the vignette below, answer the following questions. Vignette II. You become very interested in the large public interest in the iPhone. You decide to use the experimental method so you can try to understand the causes of fascination with the iPhone and be able to generalize your results to the larger population beyond the Apple Store employees. You recruit large numbers of participants, a representative sample of the larger population, and ran- domly assign them to...
25 por QUESTION 4 Assuming that other factors are held constant, which of the following sets...
25 por QUESTION 4 Assuming that other factors are held constant, which of the following sets of data is most likely to produce a statistically significant value for the repeated measures t statistici n 15 and MD-2 On-15 and MD - 4 On - 30 and MD - 2 On - 30 and MD - 4 25 QUESTION 5 For which of the following situations would a repeated-measures research design be appropriate? comparing mathematical skills for girls versus boys at...
Researchers randomly assigned 322 moderately obese volunteers to one of three diets to study how ...
Researchers randomly assigned 322 moderately obese volunteers to one of three diets to study how the diets compare with respect to various outcomes such as weight loss, lipid profiles, blood pressure, and other indicators of health and metabolic function. The three diets included a low-carbohydrate diet, a low-fat diet, and a Mediterranean diet that consists of moderate fat and a high proportion of monounsaturated fats. All study participants worked at the same research center in Israel, where lunch (the main...
read below and answer the question at the end HUMAN PARTICIPANTS AND ANIMAL SUBJECTS IN RESEARCH...
read below and answer the question at the end HUMAN PARTICIPANTS AND ANIMAL SUBJECTS IN RESEARCH Any scientist who conducts research with human participants needs to protect the interest of research subjects by complying with federal, state, and local regulations and with relevant codes established by professional groups. These provisions are designed to ensure that risks to human participants are minimized; that risks are reasonable given the expected benefits; that the participants or their authorized representatives provide informed consent; that...
6) It has been study. One een levels of treatment for the new drug will be used in the 2 study. One group will be administered the new phase of the drug once per day and a second group twice per day. You select two SRSs of 19 and 21 individuals who have been diagnosed as having high n diagnosed adrug twice per administered the new drug once per dayad cholest total cholesterol. Results are summarized in the table below....
14. Select the number of participants in the Beck & Watson
study
Group of answer choices
8
13
22
35
15. Beck & Watson determined their final sample size via
Group of answer choices
coding
saturation
triangulation
ethnography
16.Through their study, Beck & Watson determined
Group of answer choices
after a traumatic birth, subsequent births have no troubling
effects
after a traumatic birth, subsequent births brought fear, terror,
anxiety, and dread
Subsequent Childbirth After a Previous Traumatic Birth Beck, Cheryl...
Questions 33-35. Based on the vignette below, answer the following questions. Vignette II. You become very interested in the large public interest in the iPhone. You decide to use the experimental method so you can try to understand the causes of fascination with the iPhone and be able to generalize your results to the larger population beyond the Apple Store employees. You recruit large numbers of participants, a representative sample of the larger population, and ran- domly assign them to...
25 por QUESTION 4 Assuming that other factors are held constant, which of the following sets of data is most likely to produce a statistically significant value for the repeated measures t statistici n 15 and MD-2 On-15 and MD - 4 On - 30 and MD - 2 On - 30 and MD - 4 25 QUESTION 5 For which of the following situations would a repeated-measures research design be appropriate? comparing mathematical skills for girls versus boys at...
Researchers randomly assigned 322 moderately obese volunteers to one of three diets to study how the diets compare with respect to various outcomes such as weight loss, lipid profiles, blood pressure, and other indicators of health and metabolic function. The three diets included a low-carbohydrate diet, a low-fat diet, and a Mediterranean diet that consists of moderate fat and a high proportion of monounsaturated fats. All study participants worked at the same research center in Israel, where lunch (the main...
Most questions answered within 3 hours.
-
Effect of DCMU and sodium azide on Chlamydomonas? We did an
experiment where we had Chlamydomonas...
asked 30 minutes ago -
1a) According to the ideal gas law, _______________.
a. a gas has infinite volume at absolute...
asked 2 hours ago -
Oakdale Fashions, Inc. had $245,000 in 2018 taxable income.
Using the tax schedule in Table 2.3...
asked 2 hours ago -
The marketing class at CSUS had an average score of 150. An
educational analyst determined that...
asked 3 hours ago -
Justin Case has purchased a $250 000 home by putting 20 % down
and taking out...
asked 3 hours ago -
1. In a labor market, marginal cost for a firm is
____________.
a. recruiting cost
b....
asked 4 hours ago -
On January 1, 2019, ABC Company issued $60,000,000 of 20-year,
10.5% bonds when the market rate...
asked 4 hours ago -
39.4% of US homes continue to use a landline in addition to cell
phone service. 3...
asked 5 hours ago -
Starting with benzene, synthesize 1-phenyl-1-butyne.
Show intermediates and reagents.
asked 6 hours ago -
Create a 32-run crossed array design with six control factors
and two noise factors such that...
asked 7 hours ago -
A 500g sample of sand from source A has the following amounts
retained on each sieve....
asked 7 hours ago -
In
your own words, please explain the essay by John Keynes wrote "The
End of Laissez...
asked 7 hours ago