What sample statistic is typically used as an estimator of a population proportion, tt?
What sample statistic is typically used as an estimator of a population proportion, tt?
Homework Answers
For a population proportion, the sample statistic which is typically used is sample proportion and it is given by x/n where x is the number of success in the sample and n is sample size.
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What sample statistic is typically used as an estimator of a
population proportion, tt?
Complete the sentence: An unbiased estimator is _____. a. any sample statistic used to approximate a...
Complete the sentence: An unbiased estimator is _____. a. any sample statistic used to approximate a population parameter b. a sample statistic, which has an expected value equal to the value of the population parameter c. a sample statistic whose value is usually less than the value of the population parameter d. any estimator whose standard error is relatively small
Please answer all parts. 7. A sample statistic is an estimator of the population parameter, if...
Please answer all parts.
7. A sample statistic is an estimator of the population parameter, if the mean of the sampling distribution for the sample statistic is the 8. A distribution has a mean of 12 and a variance of 250. Find the second moment about the origin. Answer:
The statistic used to estimate, p, the population or process proportion or probability of success is:...
The statistic used to estimate, p, the population or process proportion or probability of success is: A. The sampling distribution t n-1 B. X bar, the sample mean C. pbar, the sample proportion D. None of the above
2. Show that: When X is a binomial rv, the sample proportion is the unbiased estimator...
2. Show that: When X is a binomial rv, the sample proportion is the unbiased estimator of the population proportion. IfX1.Хг, estimator of the population mean a) xn is a random sample with mean ,, then the sample mean is the unbiased b)
Suppose we are interested in estimating the proportion of a population using a simple random sample...
Suppose we are interested in estimating the proportion of a population using a simple random sample of size n. i. State a suitable estimator of the population proportion as well as its sampling distribution. Mention any assumptions which you make. ii. Explain statistically how to determine the minimum sample size necessary to estimate a population proportion to within e units. iii. Provide a practical marketing example of a 95% confidence interval for a proportion. iv. Explain the purpose of the...
A population proportion is 0.5. A sample of size 200 will be taken and the sample...
A population proportion is 0.5. A sample of size 200 will be taken and the sample proportion p will be used to estimate the population proportion. Round your answers to four decimal places. a. What is the probability that the sample proportion will be within ±0.03 of the population proportion? b. What is the probability that the sample proportion will be within ±0.07 of the population proportion?
A population proportion is 0.5. A sample of size 200 will be taken and the sample...
A population proportion is 0.5. A sample of size 200 will be taken and the sample proportion p will be used to estimate the population proportion. Round your answers to four decimal places. a. What is the probability that the sample proportion will be within ±0.02 of the population proportion? b. What is the probability that the sample proportion will be within ±0.06 of the population proportion?
A population proportion is 0.3. A sample of size 150 will be taken and the sample...
A population proportion is 0.3. A sample of size 150 will be taken and the sample proportion will be used to estimate the population proportion. Use z-table. Round your answers to four decimal places. a. What is the probability that the sample proportion will be within ±0.04 of the population proportion? b. What is the probability that the sample proportion will be within ±0.07 of the population proportion?
A population proportion is 0.3. A sample of size 100 will be taken and the sample...
A population proportion is 0.3. A sample of size 100 will be taken and the sample proportion will be used to estimate the population proportion. Use z-table. Round your answers to four decimal places. a. What is the probability that the sample proportion will be within ±0.03 of the population proportion? b. What is the probability that the sample proportion will be within ±0.05 of the population proportion?
A population proportion is 0.5. A sample of size 300 will be taken and the sample...
A population proportion is 0.5. A sample of size 300 will be taken and the sample proportion will be used to estimate the population proportion. Use z-table. Round your answers to four decimal places. Do not round intermediate calculations. a. What is the probability that the sample proportion will be within +0.04 of the population proportion? b. What is the probability that the sample proportion will be within 20.06 of the population proportion?
Please answer all parts.
7. A sample statistic is an estimator of the population parameter, if the mean of the sampling distribution for the sample statistic is the 8. A distribution has a mean of 12 and a variance of 250. Find the second moment about the origin. Answer:
2. Show that: When X is a binomial rv, the sample proportion is the unbiased estimator of the population proportion. IfX1.Хг, estimator of the population mean a) xn is a random sample with mean ,, then the sample mean is the unbiased b)
A population proportion is 0.5. A sample of size 300 will be taken and the sample proportion will be used to estimate the population proportion. Use z-table. Round your answers to four decimal places. Do not round intermediate calculations. a. What is the probability that the sample proportion will be within +0.04 of the population proportion? b. What is the probability that the sample proportion will be within 20.06 of the population proportion?
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