A random sample of 23 items is drawn from a population whose standard deviation is unknown. The sample mean is z = 840 and the sample standard deviation is s= 15. Use Appendix D to find the values of Student's t. (a) Construct an interval estimate of µ with 98% confidence. (Round your answers to 3 decimal places.) The 98% confidence interval is from to (b) Construct an interval estimate of µ with 98% confidence, assuming that s = 30. (Round your answers to 3 decimal places.) The 98% confidence interval is from to (c) Construct an interval estimate of µ with 98% confidence, assuming that s = 60. (Round your answers to 3 decimal places.) The 98% confidence interval is from to
A random sample of 23 items is drawn from a population whose standard deviation is unknown. The sample mean is z = 840 and the sample standard deviation is s= 15. Use Appendix D to find the values of Student's t. (a) Construct an interval estimate of µ with 98% confidence. (Round your answers to 3 decimal places.) The 98% confidence interval is from to (b) Construct an interval estimate of µ with 98% confidence, assuming that s = 30. (Round your answers to 3 decimal places.) The 98% confidence interval is from to (c) Construct an interval estimate of µ with 98% confidence, assuming that s = 60. (Round your answers to 3 decimal places.) The 98% confidence interval is from to
MATLAB: An Introduction with Applications
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![A random sample of 23 items is drawn from a population whose standard deviation is unknown. The sample mean is \( \bar{x} = 840 \) and the sample standard deviation is \( s = 15 \). Use Appendix D to find the values of Student’s \( t \).
**(a)** Construct an interval estimate of \( \mu \) with 98% confidence. *(Round your answers to 3 decimal places.)*
The 98% confidence interval is from \[ \_\_\_ \] to \[ \_\_\_ \]
**(b)** Construct an interval estimate of \( \mu \) with 98% confidence, assuming that \( s = 30 \). *(Round your answers to 3 decimal places.)*
The 98% confidence interval is from \[ \_\_\_ \] to \[ \_\_\_ \]
**(c)** Construct an interval estimate of \( \mu \) with 98% confidence, assuming that \( s = 60 \). *(Round your answers to 3 decimal places.)*
The 98% confidence interval is from \[ \_\_\_ \] to \[ \_\_\_ \]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fcc170bbd-993b-488d-a1cf-04eed8a66f5a%2Fc0941398-1575-4016-bc9a-8e0f45341acb%2Fp8t03m_processed.png&w=3840&q=75)
Transcribed Image Text:A random sample of 23 items is drawn from a population whose standard deviation is unknown. The sample mean is \( \bar{x} = 840 \) and the sample standard deviation is \( s = 15 \). Use Appendix D to find the values of Student’s \( t \).
**(a)** Construct an interval estimate of \( \mu \) with 98% confidence. *(Round your answers to 3 decimal places.)*
The 98% confidence interval is from \[ \_\_\_ \] to \[ \_\_\_ \]
**(b)** Construct an interval estimate of \( \mu \) with 98% confidence, assuming that \( s = 30 \). *(Round your answers to 3 decimal places.)*
The 98% confidence interval is from \[ \_\_\_ \] to \[ \_\_\_ \]
**(c)** Construct an interval estimate of \( \mu \) with 98% confidence, assuming that \( s = 60 \). *(Round your answers to 3 decimal places.)*
The 98% confidence interval is from \[ \_\_\_ \] to \[ \_\_\_ \]
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