24. Find the minimum sample size required to estimate a population proportion with a margin of...
24. Find the minimum sample size required to estimate a population proportion with a margin of error = 0.05 a confidence level of 90%, and from a prior study, p is estimated to be .25 (a) 203 (b) 329 (c) 247 (d) 396 (e) 289 25. In a survey of 385 students at Broward College, North Campus, results revealed that 154 students were born outside of the USA. Construct a 96% confidence interval estimate for the proportion of students who were born outside the USA. Show your calculations on a separate sheet of paper for p-hat. Q-hat, the margin of error and the construction of the confidence interval. Also, give your interpretation of the confidence interval estimate. 26. In a survey of 385 students at Broward College, North Campus, results revealed that the mean GPA for students born in the USA was 3.38, with a standard deviation of .69. Construct a 98% confidence interval estimate for the mean GPA for students who were born in the USA. Show your calculations on a separate sheet of paper for the margin of error and the construction of the confidence interval. Give your interpretation of the confidence interval estimate. 27. In a survey of 254 students at North Campus, the mean Hours spent on homework was 11.75, with a standard deviation of 2.75. Construct a 99% confidence interval estimate for the mean Hours spent on homework for students at North Campus. Show your calculations on a separate sheet of paper for the margin of error and the construction of the confidence interval. Give your interpretation of the confidence interval estimate. please show work.
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24. Find the minimum sample size required to estimate a
population proportion with a margin of...
In a survey of 385 students at Broward College, North Campus, results revealed that 154 students...
In a survey of 385 students at Broward College, North Campus, results revealed that 154 students were born outside of the USA. Construct a 96% confidence interval estimate for the proportion of students who were born outside the USA. Show your calculations on a separate sheet of paper for p-hat. Q-hat, the margin of error and the construction of the confidence interval. Also, give your interpretation of the confidence interval estimate. SHOW WORK
27. In a survey of 254 students at North Campus, the mean Hours spent on homework...
27. In a survey of 254 students at North Campus, the mean Hours spent on homework was 11.75, with a standard deviation of 2.75. Construct a 99% confidence interval estimate for the mean Hours spent on homework for students at North Campus. Show your calculations on a separate sheet of paper for the margin of error and the construction of the confidence interval. Give your interpretation of the confidence interval estimate. SHOW WORK
Using the answers from the table above, answer ALL of the questions below. For questions 1 - 13, draw a normal curve and indicate the area that you are calculating the probability of. For questions...
Using the answers from the table above, answer ALL of
the questions below. For questions 1 - 13, draw a
normal curve and indicate the area that you are calculating the
probability of. For questions 14 – 22, use the
appropriate formulas and show all of your
calculations.
Be sure to turn in the table above along with your
answers to all of the questions below. Place your answers in a
folder with your name clearly written at the top...
a. Assume that a sample is used to estimate a population proportion p. Find the margin...
a. Assume that a sample is used to estimate a population proportion p. Find the margin of error M.E. that corresponds to a sample of size 343 with 292 successes at a confidence level of 99.8%. M.E.= b. You measure 46 textbooks' weights and find they have a mean weight of 79 ounces. Assume the population standard deviation is 7.5 ounces. Based on this, construct a 90% confidence interval for the true population mean textbook weight. Give your answers as...
Use the given data to find the minimum sample size required to estimate the population proportion....
Use the given data to find the minimum sample size required to estimate the population proportion. Margin of error: 0.09; confidence level: 90%; from a prior study, (p-hat) is estimated by 0.17.
Find the minimum sample size required to estimate a population proportion with a margin of error...
Find the minimum sample size required to estimate a population proportion with a margin of error equal to .04 and a confidence level of 90%. A recent study resulted in a sample proportion of .70. ALSO determine the minimum sample size if no prior study was done.
Assume that a sample is used to estimate a population proportion p. Find the margin of...
Assume that a sample is used to estimate a population proportion p. Find the margin of error E that corresponds to the given statistics and confidence level. Round the margin of 10:19 error to four decimal places. Toto 10 In a random sample of 192 college students, 129 had part-time jobs. Find the margin of error for the 95% confidence interval used to estimate the population proportion. o lo digo a. 0.00225 b. 0.116 SSO c. 0.0598 180.00 d. 0.0664...
Assume that a sample size is used to estimate a population proportion p. Find the margin...
Assume that a sample size is used to estimate a population proportion p. Find the margin of error E that corresponds to the following statistics and confidence level. Round the margin of error to 4 decimal places. 95% confidence, n = 9000, of which 35% are successes. Use a TI84 and show all of your work
b.) A state-wide survey indicates that the proportion is 0.65. Using this estimate, what sample size...
b.) A state-wide survey indicates that the proportion is 0.65. Using this estimate, what sample size is needed so that the confidence interval will have a margin of error of 0.07 2) A researcher wants to construct a 99% confidence interval for the proportion of elementary school students in Seward County who receive free or reduced-price school lunches.
Assume that a sample is used to estimate a population proportion p. Find the margin of...
Assume that a sample is used to estimate a population proportion p. Find the margin of error E that corresponds to the given statistics and confidence level. Round the margin of error to four decimal places. In a clinical test with 1600 subjects, 800 showed improvement from the treatment. Find the margin of error for the 99% confidence interval used to estimate the population proportion. a. 0.0322 b. 0.0184 c. 0.0245 d. 0.0282 ON
Using the answers from the table above, answer ALL of
the questions below. For questions 1 - 13, draw a
normal curve and indicate the area that you are calculating the
probability of. For questions 14 – 22, use the
appropriate formulas and show all of your
calculations.
Be sure to turn in the table above along with your
answers to all of the questions below. Place your answers in a
folder with your name clearly written at the top...
Assume that a sample is used to estimate a population proportion p. Find the margin of error E that corresponds to the given statistics and confidence level. Round the margin of 10:19 error to four decimal places. Toto 10 In a random sample of 192 college students, 129 had part-time jobs. Find the margin of error for the 95% confidence interval used to estimate the population proportion. o lo digo a. 0.00225 b. 0.116 SSO c. 0.0598 180.00 d. 0.0664...
b.) A state-wide survey indicates that the proportion is 0.65. Using this estimate, what sample size is needed so that the confidence interval will have a margin of error of 0.07 2) A researcher wants to construct a 99% confidence interval for the proportion of elementary school students in Seward County who receive free or reduced-price school lunches.
Assume that a sample is used to estimate a population proportion p. Find the margin of error E that corresponds to the given statistics and confidence level. Round the margin of error to four decimal places. In a clinical test with 1600 subjects, 800 showed improvement from the treatment. Find the margin of error for the 99% confidence interval used to estimate the population proportion. a. 0.0322 b. 0.0184 c. 0.0245 d. 0.0282 ON
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