Question

In: Statistics and Probability

Describe procedures used for estimating a confidence interval when the population variance is unknown.

Describe procedures used for estimating a confidence interval when the population variance is unknown.

Solutions

Expert Solution


Related Solutions

When the population mean is unknown we might construct a confidence interval as a way of...
When the population mean is unknown we might construct a confidence interval as a way of thinking about what the population mean might be. In that construction we sometimes use a Z value and sometimes we use a t value. In a full sentence state when we use Z and when we use t.
Describe in detail the Confidence Interval consists of a range of potential values of unknown population...
Describe in detail the Confidence Interval consists of a range of potential values of unknown population parameters?
Use the confidence level and sample data to find a confidence interval for estimating the population...
Use the confidence level and sample data to find a confidence interval for estimating the population μ. Round your answer to the same number of decimal places as the sample mean. Test scores: n = 81,  = 69.0, σ = 4.6; 98% confidence
Use the confidence level and sample data to find a confidence interval for estimating the population...
Use the confidence level and sample data to find a confidence interval for estimating the population mean mu. A sociologist develops a test to measure attitudes towards public transportation, and 35 randomly selected subjects are given the test . If the sample mean was 81.2 with the sample standard deviation was 24.1, construct a confidence interval to estimate the population mean if confidence level is 95% Initial Data : E(margin of error result value) = Cl(population confidence inerval result value...
Use the confidence level and sample data to find a confidence interval for estimating the population...
Use the confidence level and sample data to find a confidence interval for estimating the population μ. Round your answer to the same number of decimal places as the sample mean. Test scores: n = 104,  = 95.3, σ = 6.5; 99% confidence Group of answer choices a. 94.2 < μ < 96.4 b. 93.7 < μ < 96.9 c. 93.8 < μ < 96.8 d. 94.1 < μ < 96.5
Use the confidence level and sample data to find a confidence interval for estimating the population...
Use the confidence level and sample data to find a confidence interval for estimating the population . Round your answer to the same number of decimal places as the sample mean. Test scores: n= 105 x bar =70.5, sigma =6.8; 99% confidence
Construct a 99% confidence interval on the population variance and the population standard deviation for the...
Construct a 99% confidence interval on the population variance and the population standard deviation for the data listed below: 91.8, 112.1, 138.3, 90.6, 136.6, 113.6, 101.5, 123.6, 81.4, 119.2, 111.4, 89.4, 110.5, 80.5, 94.8, 117.0, 105.7, 146.6, 138.6, 99.9, 106.6
Explain how finding a confidence interval for a population variance is different from finding a confidence...
Explain how finding a confidence interval for a population variance is different from finding a confidence interval for a population mean or proportion.
In order to construct a confidence interval for the population variance, a random sample of n...
In order to construct a confidence interval for the population variance, a random sample of n observations is drawn from a normal population. Use this information to find χ2α/2,df and χ21- α/2,df under the following scenarios. Use Table 3. (Round your answers to 3 decimal places.) χ2α/2,df and χ21- α/2,df . A 95% confidence level with n = 18. b. A 95% confidence level with n = 30. c. A 99% confidence level with n = 18. d. A 99%...
In order to construct a confidence interval for the population variance, a random sample of n...
In order to construct a confidence interval for the population variance, a random sample of n observations is drawn from a normal population. Use this information to find χ2α/2,df and χ21-α/2,df under the following scenarios. (Round your answers to 3 decimal places. You may find it useful to reference the appropriate table: chi-square table or F table) χ2α/2,df χ21-α/2,df a. A 90% confidence level with n = 20. b. A 90% confidence level with n = 43. c. A 99%...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT