Consider this question: what is the probability that 5 people out of a group of 20...
Homework Answers
Hypergeometric distribution is used under these conditions:
(a) Total number of items (population) is fixed.
(b) Sample size (number of trials) is a portion of the population.
(c) Probability of success changes after each trial.
In the given problem, conditions (a) and (c) are not satisfied. Therefore, hypergeometric distribution can't be used
For using hypergeometric distribution, the problem can be reworded as follows:
There are 100 people in a group of whom 10 are left-handed. What is the probability that 5 people out of a sample of 20 are left handed?
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Consider this question: what is the probability that 5 people
out of a group of 20...
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...
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....
. In this question, you are going determine the outcome of a test without assuming that...
. In this question, you are going determine the outcome of a test without assuming that the sample size condition holds for tests involving a population proportion. Consider the situation described in the box below About 13% of the population is left-handed. A biologist suspects that the scientific community is not like the general population in terms of handedness. He believes that scientists are more likely to be left-handed. He asks 40 scientists and finds that 7 are left-handed. Does...
2. Suppose that 10% of the general population is left-handed (a) We randomly sample 20 individuals....
2. Suppose that 10% of the general population is left-handed (a) We randomly sample 20 individuals. Find the probability that fewer than 2 of them are left handed. Hint: You cannot use the normal distribution (b) we randomly sample 200 individuals. Find the probability that less than 8% of them are left handed.
The proportion of left-handed people in the general population is about 0.10.1. Suppose a random sample...
The proportion of left-handed people in the general population
is about 0.10.1. Suppose a random sample of 225225 people is
observed.
Curve 2 . -10 - Curve 3 - Curve 4 Curve 5 20 Find the probability using the normal table. (Opens in new window) P(P >0.13) = P(z > 1.5) = (Click to view hint) Check Your Turn np = 22.5 The proportion of left handed people in the general population is about 0.1. Suppose a random sample of...
fouTube Maps Your Turn The proportion of left-handed people in the general population is about 0.1....
fouTube Maps Your Turn The proportion of left-handed people in the general population is about 0.1. Suppose a random sample of 225 people is observed Using our "rule of thumb." can we use normal approximation values for this sampling distribution? No • * * and nq = 98 * (Click to view hint) What is the mean of the sample proportion? * (Click to view hint) np = 7 My = 768 What is the standard error? = 76 *...
The proportion of left-handed people in the general population is about 0.1. Suppose a random sample...
The proportion of left-handed
people in the general population is about 0.1. Suppose a random
sample of 225 people is observed.
The proportion of left-handed people in the general population is about 0.1. Suppose a random sample of 225 people is observed. Using our 'rule of thumb; can we use normal approximation values for this sampling distribution? Yes + np = 22.5 and ng= (Click to view hint) What is the mean of the sample proportion? др (Click to hide...
Recall that 40% of Americans have an associates degree or above. A group of 80 people...
Recall that 40% of Americans have an associates degree or above. A group of 80 people have applied for a job (which does not list any educational restrictions) and you will be reviewing their applications What sampling distribution model would you use to model the probability of seeing various sample proportions of degree-holders in a group this size? a. b. Use your model to find the probability that 50% or more of your applicant pool will have degrees?
We will be using Excel to simulate the number of left-handed people in a particular sample....
We will be using Excel to simulate the number of left-handed people in a particular sample. Left-handed people make up about 10% of the population. We will randomly pick numbers between 1 and 10, where 1 represents a left-handed person and 2 - 10 represents a right-handed person. This should result in about 10% of our sample being left-handed. Please note there are five parts to this question. 1. Create a pie graph in Excel to show the proportion of...
Consider the probability that less than 16 out of 147 people have been in a car...
Consider the probability that less than 16 out of 147 people have been in a car accident. Assume the probability that a given person has been in a car accident is 10%. Approximate the probability using the normal distribution. Round your answer to four decimal places.
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....
. In this question, you are going determine the outcome of a test without assuming that the sample size condition holds for tests involving a population proportion. Consider the situation described in the box below About 13% of the population is left-handed. A biologist suspects that the scientific community is not like the general population in terms of handedness. He believes that scientists are more likely to be left-handed. He asks 40 scientists and finds that 7 are left-handed. Does...
2. Suppose that 10% of the general population is left-handed (a) We randomly sample 20 individuals. Find the probability that fewer than 2 of them are left handed. Hint: You cannot use the normal distribution (b) we randomly sample 200 individuals. Find the probability that less than 8% of them are left handed.
The proportion of left-handed people in the general population
is about 0.10.1. Suppose a random sample of 225225 people is
observed.
Curve 2 . -10 - Curve 3 - Curve 4 Curve 5 20 Find the probability using the normal table. (Opens in new window) P(P >0.13) = P(z > 1.5) = (Click to view hint) Check Your Turn np = 22.5 The proportion of left handed people in the general population is about 0.1. Suppose a random sample of...
fouTube Maps Your Turn The proportion of left-handed people in the general population is about 0.1. Suppose a random sample of 225 people is observed Using our "rule of thumb." can we use normal approximation values for this sampling distribution? No • * * and nq = 98 * (Click to view hint) What is the mean of the sample proportion? * (Click to view hint) np = 7 My = 768 What is the standard error? = 76 *...
The proportion of left-handed
people in the general population is about 0.1. Suppose a random
sample of 225 people is observed.
The proportion of left-handed people in the general population is about 0.1. Suppose a random sample of 225 people is observed. Using our 'rule of thumb; can we use normal approximation values for this sampling distribution? Yes + np = 22.5 and ng= (Click to view hint) What is the mean of the sample proportion? др (Click to hide...
Recall that 40% of Americans have an associates degree or above. A group of 80 people have applied for a job (which does not list any educational restrictions) and you will be reviewing their applications What sampling distribution model would you use to model the probability of seeing various sample proportions of degree-holders in a group this size? a. b. Use your model to find the probability that 50% or more of your applicant pool will have degrees?
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