6 Chrome File Edit View History Bookmarks Proles Tab Window Help . A l ' /- FriJulZS 3:52PM . WebAssign Homework Chapter 8 Section 3 Homex X * Homework Help Q&A from X + o 6 C 0 webassignnet *' (0' Apps ,/ Web Slice Gallery fj imported From lE 6 Kronos WORKFOR... e Renaissance Place 6 Student Informati... Reading List 2. [-/5 Points] ASWSBE13 8.E.013. ASK YOUR TEACHER PRACTICE ANOTHER You may need to use the appropriate appendix table or technology to answer this question. The following sample data are from a normal population: 15, 13, 17, 20, 18, 16, 11, 10. (a) What is the point estimate of the population mean? (b) What is the point estimate of the population standard deviation? (Round your answer to three decimal places.) (c) With 95% condence, what is the margin of error for the estimation of the population mean? (Round your answer to one decimal place.) (d) What is the 95% confidence interval for the population mean? (Round your answer to one decimal place.) t0 Need Help? Chrome File Edit View History Bookmarks Profiles Tab Window Help U.S. 49% Q 8 Fri Jul 23 3:52 PM WebAssign Homework " Chapter 8 Section 3 - Homewo > *Homework Help - Q&A from Or x + C webassign.net/web/Student/Assignment-Responses/last?dep=26765488 * (Update Apps / Web Slice Gallery Imported From IE Kronos WORKFOR... Renaissance Place Student Informati.. Reading List 3. [1/7 Points] DETAILS PREVIOUS ANSWERS ASWSBE13 8.E.014. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER You may need to use the appropriate appendix table or technology to answer this question. A simple random sample with n = 54 provided a sample mean of 27.5 and a sample standard deviation of 4.4. (Round your answers to one decimal place.) (a) Develop a 90% confidence interval for the population mean. to (b) Develop a 95% confidence interval for the population mean. to (c) Develop a 99% confidence interval for the population mean. to (d) What happens to the margin of error and the confidence interval as the confidence level is increased? As the confidence level increases, there is a larger margin of error and a wider confidence interval. As the confidence level increases, there is a larger margin of error and a more narrow confidence interval. As the confidence level increases, there is a smaller margin of error and a wider confidence interval. As the confidence level increases, there is a smaller margin of error and a more narrow confidence interval. Need Help? Read It JUL 236 Chrome File Edit View History Bookmarks Proles Tab Window Help . A l T' /- FriJulZS 3:52PM . WebAssign Homework Chapter 8 Section 3 Homex X * Homework Help Q&A from X + o 6 C 0 webassignnet *' I\". Apps ,/ Web Slice Gallery fj imported From lE 6 Kronos WORKFOR... e Renaissance Place 6 Student Informati... Reading List PREVIOUS ANSWERS MENDSTAT1 5CR 8.3.009. ASK YOUR TEACHER PRACTICE ANOTHER Find the necessary condence interval for a population mean u for the following values. (Round your answers to two decimal places.) 4. [113 Points] a 95% condence interval, n = 64, Q = 13.6, s2 = 3.12 to :] Interpret the interval that you have constructed. O 95% of all values will fall within the interval. 0 There is a 5% chance that an individual sample mean will fall within the interval. 0 There is a 95% chance that an individual sample mean will fall within the interval. In repeated sampling, 95% of all intervals constructed in this manner will enclose the population mean. 0 In repeated sampling, 5% of all intervals constructed in this manner will enclose the population mean. J You may need to use the appropriate appendix table or technology to answer this question. 5. {1/3 Points] PREVIOUS ANSWERS MENDSTAT15CR 8.3.012. Find the necessary condence interval for a population mean u for the following values. (Round your answers to three decimal places.) ASK YOUR TEACHER PRACTICE ANOTHER a 90% condence interval, n = 50, = 29.6, 52 = 3.83 6 Chrome File Edit View History Bookmarks Proles Tab Window Help . A l T' /- FriJulZS 3:52PM . WebAssign Homework Chapter 8 Section 3 Homex X * Homework Help Q&A from X + o 6 C 0 webassignnet *' I\". Apps ,/ Web Slice Gallery fj imported From lE 6 Kronos WORKFOR... e Renaissance Place 6 Student Informati... Reading List 5. [1/3 Points] PREVIOUS ANSWERS MENDSTAT15CR 8.3.012. Find the necessary condence interval for a population mean I4 for the following values. (Round your answers to three decimal places.) ASK YOUR TEACHER PRACTICE ANOTHER a 90% condence interval, n = 60, ; = 29.6, s2 = 3.83 t0 Interpret the interval that you have constructed. 0 We are 90% condent that the sample mean is within the interval. We are 90% condent that the population mean is within the interval. 0 There is a 90% probability that the sample mean is within the interval. 0 There is a 90% probability that the population mean is within the interval. 0 We know that 90% of the population is within the interval. '/ You may need to use the appropriate appendix table or technology to answer this question. 6. [213 Points] PREVIOUS ANSWERS PODSTATSCOREQ 9.E.038. ASK YOUR TEACHER PRACTICE ANOTHER I The two intervals (114.5, 115.3) and (114.2, 115.6) are condence intervals (calculated using the same sample data) for )4 = true average resonance frequency (in hertz) for all tennis rackets ofa certain type. 7 (a) What is the value (in hertz) of the sample mean resonance frequency? (Hint: Where is the condence interval centered?) l Chrome File Edit View History Bookmarks Profiles Tab Window Help U.S. 49% Q 8 Fri Jul 23 3:52 PM WebAssign Homework " Chapter 8 Section 3 - Homewo > Homework Help - Q&A from Or x + C webassign.net/web/Student/Assignment-Responses/last?dep=26765488 * (Update Apps / Web Slice Gallery Imported From IE Kronos WORKFOR.. Renaissance Place Student Informati.. Reading List 6. [2/3 Points] DETAILS PREVIOUS ANSWERS PODSTATCOREQ 9.E.038. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER The two intervals (114.5, 115.3) and (114.2, 115.6) are confidence intervals (calculated using the same sample data) for M = true average resonance frequency (in hertz) for all tennis rackets of a certain type. (a) What is the value (in hertz) of the sample mean resonance frequency? (Hint: Where is the confidence interval centered?) hertz (b) The confidence level for one of these intervals is 90% and for the other it is 99%. Which one has a confidence level of 99%? (114.5, 115.3) (114.2, 115.6) It is impossible to tell which is which. How can you tell? The 99% confidence interval should be narrower than the 90% confidence interval. The center of the 99% confidence interval should be less than the center of the 90% confidence interval. The center of the 99% confidence interval should be greater than the center of the 90% confidence interval. The 99% confidence interval should be wider than the 90% confidence interval. O It is impossible to tell which is which. Need Help? Watch It JUL 23Chrome File Edit View History Bookmarks Profiles Tab Window Help E U.S. 49% Q 8 Fri Jul 23 3:53 PM WebAssign Homework " Chapter 8 Section 3 - Homewo > Homework Help - Q&A from Or x + C webassign.net/web/Student/Assignment-Responses/last?dep=26765488 * (Update Apps / Web Slice Gallery Imported From IE Kronos WORKFOR... Renaissance Place Student Informati.. Reading List A sample containing years to maturity and yield for 40 corporate bonds are contained in the data file named CorporateBonds. (Round your answers to four decimal places.) Company Years to Company Years to Ticker Maturity Yield Ticker Maturity Yield HSBC 12.00 4.079 FCX 10.00 4.030 GS 9.75 5.367 GS 25.50 6.913 C 4.75 3.332 RABOBK 4.75 2.805 MS 9.25 5.798 GE 26.75 5.138 C 9.75 4.414 HCN 7.00 4.184 TOTAL 5.00 2.069 GE 9.50 3.778 MS 5.00 4.739 VOD 5.00 1.855 WFC 10.00 3.682 NEM 10.00 3.866 TOTAL 10.00 3.270 GE 1.00 0.767 TOTAL 3.25 1.748 C 25.75 3.204 BAC 9.75 4.949 SHBASS 5.00 2.861 RABOBK 9.75 4.203 PAA 10.25 3.856 GS 9.25 5.365 GS 3.75 3.558 AXP 5.00 2.181 TOTAL 1.75 1.378 MTNA 5.00 4.366 MS 4.00 4.413 MTNA 10.00 6.046 WFC 1.25 0.797 L' JUL 23Chrome File Edit View History Bookmarks Profiles Tab Window Help U.S. 49% Q 8 Fri Jul 23 3:54 PM WebAssign Homework " Chapter 8 Section 3 - Homewo > *Homework Help - Q&A from Or x + C webassign.net/web/Student/Assignment-Responses/last?dep=26765488 * (Update Apps / Web Slice Gallery Imported From IE Kronos WORKFOR. Renaissance Place