A researcher is looking for 10 people to participate to a medical study on diabetes. Suppose a ra...
A researcher is looking for 10 people to participate to a medical study on diabetes.
Suppose a random person on a given list of potential candidates accepts to participate
to the study with probability 0.1. What is the probability that the researcher will
have to call 25 candidates in order to find his 10 participants?
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A researcher is looking for 10 people to participate to a medical study on diabetes. Suppose a ra...
A researcher wants to determine the effect of an energy drink on people's productivity. 12 people...
A researcher wants to determine the effect of an energy drink on people's productivity. 12 people volunteered to participate in the study. The participants were given two equally difficult tasks, one before having the energy drink and one after having the energy drink. The time that each person took to complete each task was recorded. The researcher wants to know whether task completion time after consuming the energy drink is less than that before consuming it. The results of the...
In a clinical study, volunteers are tested for a gene that has been found to increase the risk for a disease. The probability that a person carries the gene (independently of other people) is 0.1. What is the probability that we will have to test at least
In a clinical study, volunteers are tested for a gene that has been found to increase the risk for a disease. The probability that a person carries the gene (independently of other people) is 0.1. What is the probability that we will have to test at least 7 people in order to find 4 people who carry the gene?(a) .9982 (b) .00255 (c) .9987 (d) 1.458×10-6 (e) .00346
SECTION B - ANSWER ALL QUESTIONS Question 1/20 MARKSI A) You and two friends go to...
SECTION B - ANSWER ALL QUESTIONS Question 1/20 MARKSI A) You and two friends go to a restaurant and order a sandwich. The menu has 10 types of sandwiches and each of you is equally likely to order any type. What is the probability that each of you orders a different type? [10 marks) B) The Ghanaian Diabetes Association estimates that 5.9% of Americans have diabetes. Suppose that a medical lab has developed a simple diagnostic test for diabetes that...
You are holding a party at home, and everyone is about to participate in the following...
You are holding a party at home, and everyone is about to participate in the following game. Each person will write their name on a card. All the cards will then be collected and randomly redistributed (one per person). If anyone gets back the card with their own name then all the cards will be collected and randomly distributed again, and this process will be repeated until no-one is holding the card with their own name. When everyone has a...
show your work 1, if right-handed 0, if left-handed. 10. Suppose the probability for a person...
show your work
1, if right-handed 0, if left-handed. 10. Suppose the probability for a person to be right-handed is p. Let X = (a) What distribution does X follow? (b) A scientist selected a random sample of 1000 people. Let Y be the number of people who are right-handed, what distribution does Y follow? (c) This scientist found out that among the 1000 people, 100 are right-handed. He then estimated p to be 0.1. What theorem justifies his conclusion....
Approximately 10% of people in the world are left-handed, so P(a person is left handed) =...
Approximately 10% of people in the world are left-handed, so P(a person is left handed) = 0.1. Suppose we have a class of 15 people and UHD is interested in how many left-handed desks the class will need, so we define a random variable X, the number of left-handed people in the class. 1. What distribution family does this situation belong to? What is (are) the parameter(s)? 2. What is the probability that none of the students will be left...
Consider the situation of a mass layoff (i.e. a factory shuts down) where 1,200 people become...
Consider the situation of a mass layoff (i.e. a factory shuts down) where 1,200 people become unemployed and now begin a job search. In this case there are two states: employed (E) and unemployed (U) with an initial vector X' = (E U) (0 1,200) Suppose that in any given period an unemployed person will find a job with probability 0.7 and will therefore remain unemployed with a probability of 0.3. Additionally, persons who find themselves employed in any given...
1. Suppose one of these people is selected at random. Compute the probability that the person...
1. Suppose one of these people is selected at random. Compute
the probability that the person is a nonreader.
2. Compute the probability that the person is a
nonreader.
3. Compute the probability that person is a Non-book reader
and make over $40,000
4. What is the probability that a person is a book reader,
given tgey make less than $15,000?
Find the indicated probability. The Book Industry Study Group, Inc., performs sample surveys to obtain information on characteristics of...
Some of the common medications to help people with insomnia fall asleep include Ambien, Lunesta, and...
Some of the common medications to help people with insomnia
fall asleep include Ambien, Lunesta, and Sonata. Ambien CR is an
extended-release variation and is formulated so that an individual
will fall asleep within 30 minutes. The probability density
function for X, the time (in minutes) it takes to fall asleep after
taking an Ambien CR tablet, is given below.
0.05,
f(x) = -0.0025(x-30),
0,
(a) Verify that this is a valid probability density
function.
if 0 ≤...
Elemenntary Statistics Study Guide 2: Q.10 a-e 10. Determine the type of sampling used: random convenience:...
Elemenntary Statistics Study Guide 2: Q.10 a-e
10. Determine the type of sampling used: random convenience: (a) (1 point) 25 students were selected ampling used: random, stratified, systematic, cluster Point) 25 students were selected from each of the Freshmen, Sophomore, Wunior, and Senior classes with 350, 450, 520, and 125 students respectively. point) To complete an assignment, a statistic students obtain certain data by interviewing his family members. (b) (c) (1 point) The supervisor of an assembly line selected every...
A researcher wants to determine the effect of an energy drink on people's productivity. 12 people volunteered to participate in the study. The participants were given two equally difficult tasks, one before having the energy drink and one after having the energy drink. The time that each person took to complete each task was recorded. The researcher wants to know whether task completion time after consuming the energy drink is less than that before consuming it. The results of the...
SECTION B - ANSWER ALL QUESTIONS Question 1/20 MARKSI A) You and two friends go to a restaurant and order a sandwich. The menu has 10 types of sandwiches and each of you is equally likely to order any type. What is the probability that each of you orders a different type? [10 marks) B) The Ghanaian Diabetes Association estimates that 5.9% of Americans have diabetes. Suppose that a medical lab has developed a simple diagnostic test for diabetes that...
show your work
1, if right-handed 0, if left-handed. 10. Suppose the probability for a person to be right-handed is p. Let X = (a) What distribution does X follow? (b) A scientist selected a random sample of 1000 people. Let Y be the number of people who are right-handed, what distribution does Y follow? (c) This scientist found out that among the 1000 people, 100 are right-handed. He then estimated p to be 0.1. What theorem justifies his conclusion....
Consider the situation of a mass layoff (i.e. a factory shuts down) where 1,200 people become unemployed and now begin a job search. In this case there are two states: employed (E) and unemployed (U) with an initial vector X' = (E U) (0 1,200) Suppose that in any given period an unemployed person will find a job with probability 0.7 and will therefore remain unemployed with a probability of 0.3. Additionally, persons who find themselves employed in any given...
1. Suppose one of these people is selected at random. Compute
the probability that the person is a nonreader.
2. Compute the probability that the person is a
nonreader.
3. Compute the probability that person is a Non-book reader
and make over $40,000
4. What is the probability that a person is a book reader,
given tgey make less than $15,000?
Find the indicated probability. The Book Industry Study Group, Inc., performs sample surveys to obtain information on characteristics of...
Some of the common medications to help people with insomnia
fall asleep include Ambien, Lunesta, and Sonata. Ambien CR is an
extended-release variation and is formulated so that an individual
will fall asleep within 30 minutes. The probability density
function for X, the time (in minutes) it takes to fall asleep after
taking an Ambien CR tablet, is given below.
0.05,
f(x) = -0.0025(x-30),
0,
(a) Verify that this is a valid probability density
function.
if 0 ≤...
Elemenntary Statistics Study Guide 2: Q.10 a-e
10. Determine the type of sampling used: random convenience: (a) (1 point) 25 students were selected ampling used: random, stratified, systematic, cluster Point) 25 students were selected from each of the Freshmen, Sophomore, Wunior, and Senior classes with 350, 450, 520, and 125 students respectively. point) To complete an assignment, a statistic students obtain certain data by interviewing his family members. (b) (c) (1 point) The supervisor of an assembly line selected every...
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