WebAssign Homework X Homework - MATHilOS-Ooi X Chapter 8 Section 9 Hornet X Chapter 9 Section 1 - Homer X Chapter 9 Section 2 Hornet X + C' 0 webassignnet i . ,_i . . , , , Apps ,/ Web Slice Gallery E imported From lE e Kronos WORKFOR... 6 Renaissance Place 6 Studentlnformati... Reading List ASK YOUR TEACHER PRACTICE ANOTHER How large a sample should be selected to provide a 95% condence interval with a margin of error of 10? Assume that the population standard deviation is 60. (Round your answer up to the nearest whole number.) 1. [/1 Points] ASWSBE138.E.023. You may need to use the appropriate appendix table or technology to answer this question. Need Help? _ ASWSBE13 8.E.025. ASK YOUR TEACHER PRACTICE ANOTHER Sheer industries is considering a new computer-assisted program to train maintenance employees to do machine repairs. In order to fully evaluate the program, the director of manufacturing requested an estimate of the population mean time required for maintenance employees to complete the computer assisted training. Use 7.64 days as a planning value for the population standard deviation. (Round your answers up to the nearest whole number.) You may need to use the appropriate appendix table or technology to answer this question. (a) Assuming 95% condence, what sample size would be required to obtain a margin of error of 1.5 days? (b) If the precision statement was made with 90% condence, what sample size would be required to obtain a margin of error of 3 days? Need Help? 3. [/3 Points] ASWSBE13 8.E.026. ASK YOUR TEACHER PRACTICE ANOTHER WebAssign Homework X Homework - MATHilOS-Ool X Chapter 8 Section 9 Homer X Chapter 9 Section 1 - Homer X Chapter 9 Section 2 Homel X + C' 0 webassignnet i . ,_i . . , , , Apps ,/ Web Slice Gallery E imported From lE e Kronos WORKFOR... 6 Renaissance Place 6 Studentlnformati... Reading List 3. [/3 Points] DETAILS ASWSBE13 8.E.026. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER You may need to use the appropriate appendix table or technology to answer this question. basis. Assume the standard deviation is $0.20 for the price of a gallon of regular gasoline and recommend the appropriate sample size for the US EIA to use if they wish to report each of the following i i l The U.S. Energy Information Administration (US EIA) reported that the average price for a gallon of regular gasoline is $3.94.+ The US EIA updates its estimates of average gas prices on a weekly l l l margins of error at 95% confidence. (Round your answers up to the nearest whole number.) (a) The desired margin of error is $0.10. (b) The desired margin of error is $0.06. (c) The desired margin of error is $0.04. Need Help? @ 4. [-11 Points] ASWSBE138.E.033. ASK YOUR TEACHER PRACTICE ANOTHER You may need to use the appropriate appendix table or technology to answer this question. I In a survey, the planning value for the population proportion is p* = 0.39. How large a sample should be taken to provide a 95% condence interval with a margin of error of 0.05? (Round vour answer up to nearest whole number.) l Need Help? WebAssign Homework X Homework - MATHllOS-Ool X Chapter 8 Section 9 Hornet X Chapter 9 Section 1 - Homer X Chapter 9 Section 2 Homei. X + C' 0 webassignnet i . ,_i . . , , , Apps ,/ Web Slice Gallery E imported From lE e Kronos WORKFOR... 6 Renaissance Place 6 Studentlnformati... Reading List ASK YOUR TEACHER PRACTICE ANOTHER At 95% condence, how large a sample should be taken to obtain a margin of error of 0.05 for the estimation of a population proportion? Assume that past data are not available for developing a planning value for p*. (Round your answer up to the nearest whole number.) 5. [-11 Points] ASWSBE138.E.034. You may need to use the appropriate appendix table or technology to answer this question. Need Help? @ 6. [-12 Points] ASWSBE13 8.E.039.MI. ASK YOUR TEACHER PRACTICE ANOTHER In the past, 16% of all homes with a stay-at-home parent had the father as the stay-at-home parent. An independent research rm has been charged with conducting a sample survey to obtain more current information. You may need to use the appropriate appendix table or technology to answer this question. (a) What sample size is needed if the research rm's goal is to estimate the current proportion of homes with a stay-at-home parent in which the father is the stay-at-home parent with a margin of error of 0.03? Use a 95% condence level. (Round your answer up to the nearest whole number.) (b) Repeat part (3) using a 99% condence level. (Round your answer up to the nearest whole number.) Need Help