The Digest of Education Statistics in 2012 reported that a sample of 27 teachers found that...
The Digest of Education Statistics in 2012 reported that a sample of 27 teachers found that the sample mean salary was $56,410, and that the sample standard deviation was $15,000 (note that we only have the sample standard deviation now...)
(a) what is the 90% confidence interval for the population mean?
(b) what is the 90% confidence interval for the population standard deviation?
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The Digest of Education Statistics in 2012 reported that a
sample of 27 teachers found that...
The mean solory reported in a sample of 1,000 early childhood education teachers was $32,245. The...
The mean solory reported in a sample of 1,000 early childhood education teachers was $32,245. The Standard deviation of the sample was calculated to be $4,021.54 compute a 99.1 confidence interval for the true mean salary of the population as a whole.
A statistics practitioner took a random sample of 54 observations from a population whose standard deviation...
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(1 point) A statistics practitioner took a random sample of 51 observations from a population whose...
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10. A simple random sample of size n is drawn. The sample mean x is found...
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10. A simple random sample of size n is drawn. The sample mean x is found...
10. A simple random sample of size n is drawn. The sample mean x is found to be 39.1, and the sample standard deviation s is found to be 9.7. a) (2 points) Construct a 90% confidence interval for the population mean w if the sample size n is 41. b) (2 points) Construct a 90% confidence interval for the population mean 4 if the sample size n is 101. c) (2 points) Construct a 99% confidence interval for the...
A simple random sample of size n is drawn from a population that is normally distributed....
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2. A simple random sample of size n is drawn. The sample mean I is found...
2. A simple random sample of size n is drawn. The sample mean I is found to be 53.1, and the sample standard deviation s is found to be 7.8 a) (3 points) Construct a 95% confidence interval for the population mean u if the sample size n is 81. b) (3 points) Construct a 95% confidence interval for the population mean u if the sample size n is 30. c) (3 points) Construct a 90% confidence interval for the...
1. (19 pt) A sample of 25 individuals from a normally distributed population reported a sample me...
1. (19 pt) A sample of 25 individuals from a normally distributed population reported a sample mean of 6.86 hours of sleep per night and a sample standard deviation of 0.78. (Make sure to show all work.) a. What is the 90%,confidenceinterval estimate for the population mean? b. What is the 95% confidence interval estimate for the population mean? c. What is the 99% confidence interval estimate for the population mean? d. A sample taken the previous year had a...
The mean solory reported in a sample of 1,000 early childhood education teachers was $32,245. The Standard deviation of the sample was calculated to be $4,021.54 compute a 99.1 confidence interval for the true mean salary of the population as a whole.
A statistics practitioner took a random sample of 54 observations from a population whose standard deviation is 33 and computed the sample mean to be 105. Note: For each confidence interval, enter your answer in the form (LCL, UCL). You must include the parentheses and the comma between the confidence limits. A. Estimate the population mean with 95% confidence. Confidence Interval = B. Estimate the population mean with 90% confidence. Confidence interval = C. Estimate the population mean with 99%...
(1 point) A statistics practitioner took a random sample of 51 observations from a population whose standard deviation is 23 and computed the sample mean to be 110. Note: For each confidence interval, enter your answer in the form (LCL, UCL). You must include the parentheses and the comma between the confidence limits. A. Estimate the population mean with 95% confidence. Confidence Interval = B. Estimate the population mean with 95% confidence, changing the population standard deviation to 48; Confidence...
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A simple random sample of size n is drawn from a population that is normally distributed. The sample mean, x, is found to be 106, and the sample standard deviation, s, is found to be 10. (a) Construct a 90% confidence interval about u if the sample size, n, is 22. (b) Construct a 90% confidence interval about u if the sample size, n, is 27. (c) Construct a 99% confidence interval about u if the sample size, n, is...
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1. (19 pt) A sample of 25 individuals from a normally distributed population reported a sample mean of 6.86 hours of sleep per night and a sample standard deviation of 0.78. (Make sure to show all work.) a. What is the 90%,confidenceinterval estimate for the population mean? b. What is the 95% confidence interval estimate for the population mean? c. What is the 99% confidence interval estimate for the population mean? d. A sample taken the previous year had a...
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