A sample is to be selected from a large population using simple random sampling. The proportion...
A sample is to be selected from a large population using simple random sampling. The proportion of subjects in the sample that have a given characteristic is to be calculated. Which of the following best describes the sample proportion? A. It is a lurking variable whose value is unknown. B. It is a statistic, which is unbiased for the population parameter only if the population is at least 100 times larger than the sample. C. It is a parameter. D. It is a statistic that is unbiased, and its variability does not depend on the population size provided the population is at least 100 times larger than the sample. E. It is a statistic, but its behavior cannot be determined because only one sample is to be taken.
Homework Answers
here cause sample is taken with simple random sampling this should be unbiased .
Also for independence ; sample size should be greater then 100 times of population size
; hence option D is correct
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A sample is to be selected from a large population using simple
random sampling. The proportion...
20,000 and whose population proportion with a specified characteristic Suppose a simple random sample of size...
20,000 and whose population proportion with a specified characteristic Suppose a simple random sample of size n= 75 is obtained from a population whose size is N is p = 0.2 Choose the phrase that best describes the shape of the sampling distribution below. A Approximately normal because ns0.05N and np(1-P) <10. B. Approximately normal because ns0.05N and np(1-P) 10. C. Not normal because ns 0.05N and np(1-P) < 10. OD. Not normal because ns0.05N and np(1-P) 10. Determine the...
Suppose a simple random sample of size n = 75 is obtained from a population whose...
Suppose a simple random sample of size n = 75 is obtained from a population whose size is N = 10,000 and whose population proportion with a specified characteristic is p=0.6. Complete parts (a) through (c) below. (a) Describe the sampling distribution of p. Choose the phrase that best describes the shape of the sampling distribution below. O A. Not normal because n s 0.05N and np(1-p) < 10. O B. Not normal because ns0.05N and np(1-P) 2 10. O...
A simple random sample of size n = 200 is obtained from a population whose size...
A simple random sample of size n = 200 is obtained from a population whose size is N = 25,000 and whose population proportion with a specified characteristic is = = 0.65. a) Describe the sampling distribution of ? b) What is the probability of obtaining x = 118 or fewer individuals with the characteristic? That is, what is P(? <= 0.59)?
3) Suppose a simple random sample of size n = 1000 is obtained from a population...
3) Suppose a simple random sample of size n = 1000 is obtained from a population whose size is N = 1,500,000 and whose population proportion with a specified characteristic is p = 0.52. (a) Describe the sampling distribution of p. (b) What is the probability of obtaining x = 560 or more individuals with the characteristic? (c) What is the probability of obtaining x = 490 or fewer individuals with the characteristic?
A random sample of size n is selected from a population that has a proportion of...
A random sample of size n is selected from a population that has a proportion of success equal to 0.23. What effect will increasing the sample size by 4 times as much have on the mean and standard deviation of the sampling distribution for the given sample proportion?
Suppose a simple random sample of size 150 is obtained from a population whose size is...
Suppose a simple random sample of size 150 is obtained from a population whose size is N 30,000 and whose population proportion with a specified characteristic is p0.8. (a) Describe the sampling distribution of p. Choose the phrase that best describes the shape of the sampling distribution below. O A. Not normal because ns0.05N and p(1-P) 10. OB. Approximately normal because ns0.05N and p1 - p) < 10. OC. Approximately normal because ns0.05N and no 1- 10 OD. Not normal...
Suppose a simple random sample of size 150 is obtained from a population whose size is...
Suppose a simple random sample of size 150 is obtained from a population whose size is N15.000 and whose population proportion with a specified characteristic hp 04. Complete parts () through (c) below. (a) Describe the sampling distribution of Choose the phrase that best describes the shape of the sampling distribution below. O A. Approximately normal because 0.05 and 1-10 OB. Approximately normal becausen 00N and re-<10 OG Not normal because 0.06 and 1-12 10 OD. Not normalen SOON and...
Suppose a simple random sample of size n=200 is obtained from a population whose size is...
Suppose a simple random sample of size n=200 is obtained from a population whose size is N= 30,000 and whose population proportion with a specified characteristic is p = 0.4. Complete parts (a) through (c) below. (a) Describe the sampling distribution of p. Choose the phrase that best describes the shape of the sampling distribution below. A. Not normal because ns0.05N and np(1-P) 10. B. Not normal because ns 0.05N and np(1-p) < 10. C. Approximately normal because ns0.05N and...
Suppose a simple random sample of size n=200 is obtained from a population whose size is...
Suppose a simple random sample of size n=200 is obtained from a population whose size is N=10,000 and whose pe (a) Describe the sampling distribution of p. Choose the phrase that best describes the shape of the sampling distribution below. O A. Approximately normal because np(1-P) < 10. OB. Approximately normal because np(1-P) 10. OC. Not normal because np(1-P) < 10. OD. Not normal because np(1-P) 2 10 Determine the mean of the sampling distribution of p. Ha =(Round to...
20,000 and whose population proportion with a specified characteristic Suppose a simple random sample of size n= 75 is obtained from a population whose size is N is p = 0.2 Choose the phrase that best describes the shape of the sampling distribution below. A Approximately normal because ns0.05N and np(1-P) <10. B. Approximately normal because ns0.05N and np(1-P) 10. C. Not normal because ns 0.05N and np(1-P) < 10. OD. Not normal because ns0.05N and np(1-P) 10. Determine the...
Suppose a simple random sample of size n = 75 is obtained from a population whose size is N = 10,000 and whose population proportion with a specified characteristic is p=0.6. Complete parts (a) through (c) below. (a) Describe the sampling distribution of p. Choose the phrase that best describes the shape of the sampling distribution below. O A. Not normal because n s 0.05N and np(1-p) < 10. O B. Not normal because ns0.05N and np(1-P) 2 10. O...
3) Suppose a simple random sample of size n = 1000 is obtained from a population whose size is N = 1,500,000 and whose population proportion with a specified characteristic is p = 0.52. (a) Describe the sampling distribution of p. (b) What is the probability of obtaining x = 560 or more individuals with the characteristic? (c) What is the probability of obtaining x = 490 or fewer individuals with the characteristic?
Suppose a simple random sample of size 150 is obtained from a population whose size is N 30,000 and whose population proportion with a specified characteristic is p0.8. (a) Describe the sampling distribution of p. Choose the phrase that best describes the shape of the sampling distribution below. O A. Not normal because ns0.05N and p(1-P) 10. OB. Approximately normal because ns0.05N and p1 - p) < 10. OC. Approximately normal because ns0.05N and no 1- 10 OD. Not normal...
Suppose a simple random sample of size 150 is obtained from a population whose size is N15.000 and whose population proportion with a specified characteristic hp 04. Complete parts () through (c) below. (a) Describe the sampling distribution of Choose the phrase that best describes the shape of the sampling distribution below. O A. Approximately normal because 0.05 and 1-10 OB. Approximately normal becausen 00N and re-<10 OG Not normal because 0.06 and 1-12 10 OD. Not normalen SOON and...
Suppose a simple random sample of size n=200 is obtained from a population whose size is N= 30,000 and whose population proportion with a specified characteristic is p = 0.4. Complete parts (a) through (c) below. (a) Describe the sampling distribution of p. Choose the phrase that best describes the shape of the sampling distribution below. A. Not normal because ns0.05N and np(1-P) 10. B. Not normal because ns 0.05N and np(1-p) < 10. C. Approximately normal because ns0.05N and...
Suppose a simple random sample of size n=200 is obtained from a population whose size is N=10,000 and whose pe (a) Describe the sampling distribution of p. Choose the phrase that best describes the shape of the sampling distribution below. O A. Approximately normal because np(1-P) < 10. OB. Approximately normal because np(1-P) 10. OC. Not normal because np(1-P) < 10. OD. Not normal because np(1-P) 2 10 Determine the mean of the sampling distribution of p. Ha =(Round to...
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