Why is using a population less effective than using a random sample of that population?...
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Why is using a population less effective than using a random sample of that population?
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All of the answers A,B,C F. Only answer B
Homework Answers
option E is correct : answers A,B,C
as it is not possible to take each and every data in population every time, also it takes a lot of time and money to gather that
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Why is using a population less
effective than using a random sample of that
population?...
This activity will help you distinguish between a sample statistic and a population parameter Part I...
This activity will help you distinguish between a sample statistic and a population parameter Part I Proportions from Random Samples Vary Imagine a small college with only 200 students, and suppose that 60% of these students are eligible for financial aid. What is the population? What is the variable? What is the population proportion? Note: Populations are usually much larger than 200 people. Also, in real situations, we do not know the population proportion. We are using a simplified situation...
Suppose that a random sample of size 1 is to be taken from a finite population...
Suppose that a random sample of size 1 is to be taken from a finite population of size N. Answer parts (a) through (c) below. a. How many possible samples are there? A. N + 1 B. N-1 0 C. N D. 1 b. Identify the relationship between the possible sample means and the possible observations of the variable under consideration. Choose the correct answer below. A. Each possible sample mean is equal to an observation, only if the population...
4. Comparing two population proportions (independent samples)
4. Comparing two population proportions (independent samples) Most major survey research organizations do not include wireless telephone numbers when conducting random-digit-dial telephone surveys. If there are differences between persons with and without landline phones, using a random-digit-dial telephone survey may introduce bias into the survey results. Data on a broad range of health topics are collected through personal household interviews of a representative sample of the U.S. civilian noninstitutionalized population in the National Health Interview Survey (NHIS) respondents are also asked about...
A simple random sample of 42 adults is obtained from a normally distributed population, and each...
A simple random sample of 42 adults is obtained from a normally distributed population, and each person's red blood cell count (in cells per microliter) is measured. The sample mean is 5.25 and the sample standard deviation is 0 52 Use a 0.01 significance level and the given calculator display to test the claim that the sample is om a population with a mean less than 54, which s a value often used or the upper limit of the range...
A simple random sample of size n 43 is obtained from a population that is skewed...
A simple random sample of size n 43 is obtained from a population that is skewed left with = 54 and 06. Does the population need to be normally distributed for the sampling distribution of x to be approximately normally distributed? Why? What is the sampling distribution of Does the population need to be normally distributed for the sampling distribution of x to be approximately normally distributed? Why? O A. No. The central limit theorem states that only if the...
A simple random sample of 53 adults is obtained from a normally distributed population, and each...
A simple random sample of 53 adults is obtained from a normally distributed population, and each person's red blood cell count (in cells per microliter) is measured. The sample mean is 5.28 and the sample standard deviation is 0.55. Use a 0.05 significance level and the given calculator display to test the claim that the sample is from a population with a mean less than 5.4 which is a value often used for the upper limit of the range of...
a simple random sample of size n=72 is obtained from a population with u=82 and o=3....
a
simple random sample of size n=72 is obtained from a population
with u=82 and o=3. does the population need to be normallt
distibuted for the sampling distribution of x to be approximately
normaly distibuted? why? what is the sampling distribution of
x?
A simple random sample of stren72 is obtained from a population with 12 and a = 3. Does the population need to be normally distributed for the sampling distribution of to be approximately omally distributed? Why? What...
The Fisheries did a survey of ice fishing shacks last winter. A random sample of 195...
The Fisheries did a survey of ice fishing shacks last winter. A random sample of 195 shacks on the Salmnac River found that 152 had some type of heat source. On the Thomas River, a sample of 162 shacks found that 118 had some type of heat. A) Find a 99% confidence interval for p1 -- p2. B) Based upon these samples, can we determine that the populations on the Salmnac River and on the Thomas River are different? C)...
Suppose that a simple random sample of n = 6 individuals is obtained from a population...
Suppose that a simple random sample of n = 6 individuals is obtained from a population that is skewed right with mean u = 44 and standard deviation o =2. (a) The shape of the sampling distribution of the sample mean is approximately normal. Is this true or false? (b) What is the mean of the sampling distribution of the sample mean? (c) What is the standard deviation of the sampling distribution of the sample mean? (a) Choose the correct...
Consider random samples of size 265 drawn from population A with proportion 0.13 and random samples...
Consider random samples of size 265 drawn from population A with proportion 0.13 and random samples of size 285 drawn from population B with proportion 0.31. (a) Find the standard error of the distribution of differences in sample proportions, p A D B. Round your answer for the standard error to three decimal places. standard error Consider random samples of size 86 drawn from population A with proportion 0.44 and random samples of size 66 drawn from population B with...
This activity will help you distinguish between a sample statistic and a population parameter Part I Proportions from Random Samples Vary Imagine a small college with only 200 students, and suppose that 60% of these students are eligible for financial aid. What is the population? What is the variable? What is the population proportion? Note: Populations are usually much larger than 200 people. Also, in real situations, we do not know the population proportion. We are using a simplified situation...
Suppose that a random sample of size 1 is to be taken from a finite population of size N. Answer parts (a) through (c) below. a. How many possible samples are there? A. N + 1 B. N-1 0 C. N D. 1 b. Identify the relationship between the possible sample means and the possible observations of the variable under consideration. Choose the correct answer below. A. Each possible sample mean is equal to an observation, only if the population...
A simple random sample of 42 adults is obtained from a normally distributed population, and each person's red blood cell count (in cells per microliter) is measured. The sample mean is 5.25 and the sample standard deviation is 0 52 Use a 0.01 significance level and the given calculator display to test the claim that the sample is om a population with a mean less than 54, which s a value often used or the upper limit of the range...
A simple random sample of size n 43 is obtained from a population that is skewed left with = 54 and 06. Does the population need to be normally distributed for the sampling distribution of x to be approximately normally distributed? Why? What is the sampling distribution of Does the population need to be normally distributed for the sampling distribution of x to be approximately normally distributed? Why? O A. No. The central limit theorem states that only if the...
a
simple random sample of size n=72 is obtained from a population
with u=82 and o=3. does the population need to be normallt
distibuted for the sampling distribution of x to be approximately
normaly distibuted? why? what is the sampling distribution of
x?
A simple random sample of stren72 is obtained from a population with 12 and a = 3. Does the population need to be normally distributed for the sampling distribution of to be approximately omally distributed? Why? What...
Suppose that a simple random sample of n = 6 individuals is obtained from a population that is skewed right with mean u = 44 and standard deviation o =2. (a) The shape of the sampling distribution of the sample mean is approximately normal. Is this true or false? (b) What is the mean of the sampling distribution of the sample mean? (c) What is the standard deviation of the sampling distribution of the sample mean? (a) Choose the correct...
Consider random samples of size 265 drawn from population A with proportion 0.13 and random samples of size 285 drawn from population B with proportion 0.31. (a) Find the standard error of the distribution of differences in sample proportions, p A D B. Round your answer for the standard error to three decimal places. standard error Consider random samples of size 86 drawn from population A with proportion 0.44 and random samples of size 66 drawn from population B with...
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