A breathalyzer for alcohol concentration was used on a suspected drunk driver. The test is known...
A breathalyzer for alcohol concentration was used on a suspected drunk driver. The test is known to provide a positive result in 95% of cases where the alcohol concentration is above the legal limit (intoxicated) . However it is known that the test provides a positive outcome on 4% of individuals who had not consumed alcohol (false positives). What is the probability that the driver is intoxicated given a positive to the test?
Homework Answers
Add Answer to:
A breathalyzer for alcohol
concentration was used on a suspected drunk driver. The test is
known...
A breathalyzer is a device used to estimate the blood alcohol content of a suspected drunk...
A breathalyzer is a device used to estimate the blood alcohol content of a suspected drunk driver by measuring the amount of alcohol in one's breath. The fuel cell breathalyzer employs the reaction below: CH2CH2OH(s)+O2(g) --HCH,O,(g)+H2O(g) When a suspected drunk driver blows his or her breath through the fuel cell breathalyzer. the device measures the current produced by the reaction and calculates the percent alcohol in the breath When a suspected drunk driver blows 208 mL of his breath through...
11 points A breathalyzer test is used by police in an area to determine whether a...
11 points A breathalyzer test is used by police in an area to determine whether a driver's blood alcohol conten BAC not consumed too much alcohol give a BAC reading from the breathalyzer as being above t level. Suppose that in fact, 6 6% of drivers are above the legal alcohol limit, and the police stop a driver at random sa o e h the legal limit, while 11.9% or drivers who have consumed too much legal limit. The devices...
3. Police have arrested a suspect at an international airport in connection to a terroristic attack....
3. Police have arrested a suspect at an international airport in connection to a terroristic attack. Based on their preliminary investigation they have reasons to believe that this individual has a probability of 60% to having built the explosive device. An lon Scan test for explosives was run on a sample collected from the hands of the suspect. The test is known to provide a positive result in 95% of cases where explosives are present. However, a survey indicated that...
A diagnostic test for a certain disease is applied to n individuals known to not have...
A diagnostic test for a certain disease is applied to n individuals known to not have the disease. Let X = the number among the n test results that are positive (indicating presence of the disease, so X is the number of false positives) and p = the probability that a disease-free individual's test result is positive (i.e., p is the true proportion of test results from disease-free individuals that are positive). Assume that only X is available rather than...
A diagnostic test for a certain disease is applied to n individuals known to not have the disease.
A diagnostic test for a certain disease is applied to n individuals known to not have the disease. Let X the number among the n test results that are positive (indicating presence of the disease, so X is the number of false positives) and p = the probability that a disease-free individual's test result is positive (i.e., p is the true proportion of test results from disease-free individuals that are positive). Assume that only X is available rather than the...
Consider a small town that has a population of 1,000 people. It is known that in...
Consider a small town that has a population of 1,000 people. It is known that in this town, 10 people are infected with a rare disease. The remaining 990 people are NOT infected with the disease. This data is known with certainty. Recently, The FDA (Food and Drug administration) developed a test that determines if a person is infected with this disease. However, as with most test of this nature, it is not foolproof proof as there are a certain...
Prenatal Screening test Prenatal screening is a non-invasive type of testing that is available to all pregnant indivi...
Prenatal Screening test Prenatal screening is a non-invasive type of testing that is available to all pregnant individuals in Ontario. Non-invasive means that there is no risk to the pregnant person or the baby. Screening uses ultrasound, blood work or some combination of both to get information about the likelihood of a baby having a specific health condition. Screening tests do not tell you for sure if the baby has the condition, only what the chance is. A physician will...
Prenatal Screening test Prenatal screening is a non-invasive type of testing that is available to all...
Prenatal Screening test Prenatal screening is a non-invasive type of testing that is available to all pregnant individuals in Ontario. Non-invasive means that there is no risk to the pregnant person or the baby. Screening uses ultrasound, blood work or some combination of both to get information about the likelihood of a baby having a specific health condition. Screening tests do not tell you for sure if the baby has the condition, only what the chance is. A physician will...
Name: Section Number To be graded assignments must be completed and submitted on the original book...
Name: Section Number To be graded assignments must be completed and submitted on the original book page Hypothesis Testing -As a Diagnostic Test ? Answer the following questions over the content material you just read or watched. 1. What is a false positive rate in the context of hypothesis testing? 2. What is the goal of hypothesis testing? 3. What is a Type I error, and how is it related to an "alpha level?" 4. What does it mean to...
Indicate the one major type of limitation that is possible in each of the situations described...
Indicate the one major type of limitation that is possible in each of the situations described below. Choose from the following: selection bias, information bias, confounding, random error, limited generalizability or no error. Choose only one per example. A case-control study was conducted to determine whether lower socioeconomic status was associated with a higher risk of cervical cancer. The cases consisted of 250 women with cervical cancer who had been referred to Massachusetts General Hospital for treatment for cervical cancer. They were referred from...
A breathalyzer is a device used to estimate the blood alcohol content of a suspected drunk driver by measuring the amount of alcohol in one's breath. The fuel cell breathalyzer employs the reaction below: CH2CH2OH(s)+O2(g) --HCH,O,(g)+H2O(g) When a suspected drunk driver blows his or her breath through the fuel cell breathalyzer. the device measures the current produced by the reaction and calculates the percent alcohol in the breath When a suspected drunk driver blows 208 mL of his breath through...
11 points A breathalyzer test is used by police in an area to determine whether a driver's blood alcohol conten BAC not consumed too much alcohol give a BAC reading from the breathalyzer as being above t level. Suppose that in fact, 6 6% of drivers are above the legal alcohol limit, and the police stop a driver at random sa o e h the legal limit, while 11.9% or drivers who have consumed too much legal limit. The devices...
3. Police have arrested a suspect at an international airport in connection to a terroristic attack. Based on their preliminary investigation they have reasons to believe that this individual has a probability of 60% to having built the explosive device. An lon Scan test for explosives was run on a sample collected from the hands of the suspect. The test is known to provide a positive result in 95% of cases where explosives are present. However, a survey indicated that...
A diagnostic test for a certain disease is applied to n individuals known to not have the disease. Let X = the number among the n test results that are positive (indicating presence of the disease, so X is the number of false positives) and p = the probability that a disease-free individual's test result is positive (i.e., p is the true proportion of test results from disease-free individuals that are positive). Assume that only X is available rather than...
A diagnostic test for a certain disease is applied to n individuals known to not have the disease. Let X the number among the n test results that are positive (indicating presence of the disease, so X is the number of false positives) and p = the probability that a disease-free individual's test result is positive (i.e., p is the true proportion of test results from disease-free individuals that are positive). Assume that only X is available rather than the...
Consider a small town that has a population of 1,000 people. It is known that in this town, 10 people are infected with a rare disease. The remaining 990 people are NOT infected with the disease. This data is known with certainty. Recently, The FDA (Food and Drug administration) developed a test that determines if a person is infected with this disease. However, as with most test of this nature, it is not foolproof proof as there are a certain...
Prenatal Screening test Prenatal screening is a non-invasive type of testing that is available to all pregnant individuals in Ontario. Non-invasive means that there is no risk to the pregnant person or the baby. Screening uses ultrasound, blood work or some combination of both to get information about the likelihood of a baby having a specific health condition. Screening tests do not tell you for sure if the baby has the condition, only what the chance is. A physician will...
Prenatal Screening test Prenatal screening is a non-invasive type of testing that is available to all pregnant individuals in Ontario. Non-invasive means that there is no risk to the pregnant person or the baby. Screening uses ultrasound, blood work or some combination of both to get information about the likelihood of a baby having a specific health condition. Screening tests do not tell you for sure if the baby has the condition, only what the chance is. A physician will...
Name: Section Number To be graded assignments must be completed and submitted on the original book page Hypothesis Testing -As a Diagnostic Test ? Answer the following questions over the content material you just read or watched. 1. What is a false positive rate in the context of hypothesis testing? 2. What is the goal of hypothesis testing? 3. What is a Type I error, and how is it related to an "alpha level?" 4. What does it mean to...
Most questions answered within 3 hours.
-
Hello! I was wondering if I could have some help?
If the vapor pressure of carvone...
asked 10 minutes ago -
An economist wants to estimate the mean per capita income (in
thousands of dollars) for a...
asked 29 minutes ago -
What would be the input/output characteristic of a circuit
obtained by putting two of your 2's-complementers...
asked 28 minutes ago -
In Drosophila, the transition from the syncytial blastoderm
stage to the cellular blastoderm stage is a...
asked 56 minutes ago -
Project management question:
Name 3 different types of resources (hint: humans are one
type)
asked 1 hour ago -
Consider the following reaction: C 2H 2( g) + 2H 2( g) C 2H 6(
g)...
asked 1 hour ago -
Consider a 1.0 L buffer containing 0.092 mol L-1 HCOOH and 0.100
mol L-1 HCOO-. What...
asked 1 hour ago -
Koch Realty has owned a vacant land with a FMV of
$775,000 and an adjusted basis...
asked 1 hour ago -
It is estimated 29% of all adults in United States invest in
stocks and that 85%...
asked 1 hour ago -
What does a 2-sided p value of 0.04 mean? (I am not asking if it
is...
asked 1 hour ago -
A parallel-plate capacitor is made from two aluminum-foil
sheets, each 7.8 cmcm wide and 5.1 mmlong....
asked 1 hour ago -
1. why is toluene a stronger nucleophile than benzene?
2.why is phenol a stronger nucleophile than...
asked 2 hours ago