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Question of 41 1.0 Points A 95% confidence interval for the true mean cholesterol level of...
Construct a 95% confidence interval to estimate the population mean using the data below. x=41 σ=8...
Construct a 95% confidence interval to estimate the population mean using the data below. x=41 σ=8 n=43 With 95% confidence, when n=43 the population mean is between a lower limit of... and an upper limit of
A researcher is interested in finding a 95% confidence interval for the mean number of times...
A researcher is interested in finding a 95% confidence interval for the mean number of times per day that college students text. The study included 141 students who averaged 25.7 texts per day. The standard deviation was 21.2 texts. Round answers to 3 decimal places where possible. a. To compute the confidence interval use a tv distribution. 0 and b. With 95% confidence the population mean number of texts per day is between texts. c. If many groups of 141...
A student was asked to find a 95% confidence interval for widget width using data from...
A student was asked to find a 95% confidence interval for widget width using data from a random sample of size n = 29. Which of the following is a correct interpretation of the interval 13.7 < μ < 25.4? Check all that are correct. With 95% confidence, the mean width of all widgets is between 13.7 and 25.4. With 95% confidence, the mean width of a randomly selected widget will be between 13.7 and 25.4. There is a 95%...
You are interested in finding a 95% confidence interval for the mean number of visits for...
You are interested in finding a 95% confidence interval for the mean number of visits for physical therapy patients. The data below show the number of visits for 15 randomly selected physical therapy patients. Round answers to 3 decimal places where possible. 9 26 15 17 11 25 9 18 14 16 26 26 22 28 a. To compute the confidence interval use a ? distribution b. With 95% confidence the population mean number of visits per physical therapy patient...
A student was asked to find a 95% confidence interval for the proportion of students who...
A student was asked to find a 95% confidence interval for the proportion of students who take notes using data from a random sample of size n = 82. Which of the following is a correct interpretation of the interval 0.13 < p < 0.33? Check the best one. With 95% confidence, the proportion of all students who take notes is between 0.13 and 0.33. With 95% confidence, a randomly selected student takes notes in a proportion of their classes...
A researcher is interested in estimating the mean cholesterol level in men. Based on a simple...
A researcher is interested in estimating the mean cholesterol level in men. Based on a simple random sample of 54 men, the 95% confidence interval for the population mean μ was 189.9 < μ < 210.1 A. If 100 different samples of size 54 are selected, and based on each sample, a confidence interval was constructed, exactly 95 of these confidence intervals would contain the true value of μ. B. If many different samples of size 54 are selected and,...
part 1. A student was asked to find a 95% confidence interval for the proportion of...
part 1. A student was asked to find a 95% confidence interval for the proportion of students who take notes using data from a random sample of size n = 79. Which of the following is a correct interpretation of the interval 0.12 < p < 0.32? There is a 95% chance that the proportion of notetakers in a sample of 79 students will be between 0.12 and 0.32. There is a 95% chance that the proportion of the population...
A fitness center is interested in finding a 95% confidence interval for the mean number of...
A fitness center is interested in finding a 95% confidence interval for the mean number of days per week that Americans who are members of a fitness club go to their fitness center. Records of 240 members were looked at and their mean number of visits per week was 2.3 and the standard deviation was 1.7. Round answers to 3 decimal places where possible. a. To compute the confidence interval use a ? v distribution. b. With 95% confidence the...
A fitness center is interested in finding a 95% confidence interval for the mean number of...
A fitness center is interested in finding a 95% confidence interval for the mean number of days per week that Americans who are members of a fitness club go to their fitness center. Records of 265 members were looked at and their mean number of visits per week was 2.5 and the standard deviation was 1.6. Round answers to 3 decimal places where possible. a. To compute the confidence interval use a ? t or z distribution. b. With 95% confidence...
A researcher is interested in finding a 95% confidence interval for the mean number minutes students...
A researcher is interested in finding a 95% confidence interval for the mean number minutes students are concentrating on their professor during a one hour statistics lecture. The study included 96 students who averaged 37.1 minutes concentrating on their professor during the hour lecture. The standard deviation was 13.6 minutes. Round answers to 3 decimal places where possible. a. To compute the confidence interval use a distribution. b. With 95% confidence the population mean minutes of concentration is between and...
A researcher is interested in finding a 95% confidence interval for the mean number of times per day that college students text. The study included 141 students who averaged 25.7 texts per day. The standard deviation was 21.2 texts. Round answers to 3 decimal places where possible. a. To compute the confidence interval use a tv distribution. 0 and b. With 95% confidence the population mean number of texts per day is between texts. c. If many groups of 141...
You are interested in finding a 95% confidence interval for the mean number of visits for physical therapy patients. The data below show the number of visits for 15 randomly selected physical therapy patients. Round answers to 3 decimal places where possible. 9 26 15 17 11 25 9 18 14 16 26 26 22 28 a. To compute the confidence interval use a ? distribution b. With 95% confidence the population mean number of visits per physical therapy patient...
A fitness center is interested in finding a 95% confidence interval for the mean number of days per week that Americans who are members of a fitness club go to their fitness center. Records of 240 members were looked at and their mean number of visits per week was 2.3 and the standard deviation was 1.7. Round answers to 3 decimal places where possible. a. To compute the confidence interval use a ? v distribution. b. With 95% confidence the...
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