Calculate an approximate 68% confidence interval for the population mean salaries of male employees, based on...
Calculate an approximate 68% confidence interval for the population mean salaries of male employees, based on the following sample data: from a sample of 144 male employees, the sample mean salaries is $500. Assume the population standard deviation is $144. Assume the distribution of salaries is normally distributed. Enter your answer in the format (lower, upper) where the "lower" is the lower confidence limit and the "upper" is the upper confidence limit. Round each numerical input to the nearest integer.
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Calculate an approximate 68% confidence interval for the
population mean salaries of male employees, based on...
Construct the indicated confidence interval for the population mean μ using the t-distribution
X6.2.9-TConstruct the indicated confidence interval for the population mean μ using the t-distribution. Assume the population is normally distributed c = 0.90, x̅ = 12.9, s = 4.0, n = 9 The 90% confidence interval using a t-distribution is 6.2.17-T In a random sample of 26 people, the mean commute time to work was 34.8 minutes and the standard deviation was 7.2 minutes. Assume the population is normally distributed and use a t-distribution to construct a 98% confidence interval for the population mean μ...
A through D please Objective 4: Construct and Interpret a Confidence Interval for a Population Mean...
A through D please
Objective 4: Construct and Interpret a Confidence Interval for a Population Mean 9.2 Estimating a Population Mean 9.2.17 O of 1 Point Question Help A simple random sample of size n is drawn from a population that is normally distributed. The sample mean, x, is found to be 114, and the sample standard deviation, s, is found to be 10. (a) Construct an 80% confidence interval about if the sample size, n, is 23. (b) Construct...
Confidence interval for the population mean: Use of the t distribu... A researcher collected sample data...
Confidence interval for the population mean: Use of the t distribu... A researcher collected sample data for 10 women ages 18 to 24. The sample had a mean serum cholesterol level (measured in mg/100 mL) of 192.4, with a standard deviation of 5.2. Assuming that serum cholesterol levels for women ages 18 to 24 are normally distributed, find a 99% confidence interval for the mean serum cholesterol level of all women in this age group. Then complete the table below....
Please Help I need the answers to below. Question 2: Construct a 95% confidence interval for...
Please Help I need the answers to below. Question 2: Construct a 95% confidence interval for the population mean. Assume that your data is normally distributed and σ is unknown. Include a statement that correctly interprets the confidence interval in context of the scenario. Calculations/Values Formulas/Answers Mean 72,224.34 Standard Deviation 22,644.46 n 364 Critical Value Margin of Error Lower Limit Upper Limit Question 3 construct a 99% confidence interval for the population mean. Assume that your data is normally distributed...
2) (3 points) A news report states that the 90% confidence interval for the mean number...
2) (3 points) A news report states that the 90% confidence
interval for the mean number of daily calories consumed by
participants in a medical study is (2020, 2160). Assume the
population distribution for daily calories consumed is normally
distributed and that the confidence interval was based on a simple
random sample of 20 observations. Calculate the sample mean, the
margin of error, and the sample standard deviation based on the
stated confidence interval and the given sample size. Use...
Construct a 99% confidence interval to estimate the population mean using the following data. What assumptions...
Construct a 99% confidence interval to estimate the population mean using the following data. What assumptions need to be made to construct this interval? x=88 20 n 11 What assumptions need to be made to construct this interval? Tre O A. The population mean will be in the confidence interval. en OB. The sample size is less than 30. et c . The population must be normally distributed. D. The population is skewed to one side. With 99% confidence, when...
Answers only is okay! Construct the indicated confidence interval for the population mean μ using the...
Answers only is okay! Construct the indicated confidence interval for the population mean μ using the t-distribution. Assume the population is normally distributed. c=0.99, x=13.1, s=3.0, n= 6 Construct the indicated confidence interval for the population mean μ using the t-distribution. Assume the population is normally distributed. c=0.95, x=14.5, s=0.55, n= 15 Use the given confidence interval to find the margin of error and the sample mean. (12.7,19.9The sample mean is In a random sample of 18 people, the mean...
Construct a 99% confidence interval to estimate the population mean using the data below. X =...
Construct a 99% confidence interval to estimate the population mean using the data below. X = 46 o = 12 n42 With 99% confidence, when n = 42 the population mean is between a lower limit of (Round to two decimal places as needed.) and an upper limit of Construct a 95% confidence interval to estimate the population mean with X = 102 and o = 25 for the following sample sizes. a) n = 32 b) n = 45...
Chefs: Assume the mean number of taste buds from the general population is 10,000 with a...
Chefs: Assume the mean number of taste buds from the general population is 10,000 with a standard deviation of 950. You take a sample of 10 top chefs and find the mean number of taste buds is 10,900. Assume that the number of taste buds in top chefs is a normally distributed variable and assume the standard deviation is the same as for the general population. (a) What is the point estimate for the mean number of taste buds for...
(3 points) A news report states that the 90% confidence interval for the mean number of...
(3 points) A news report states that the 90% confidence interval for the mean number of daily calories consumed by participants in a medical study is (1750, 1980). Assume the population distribution for daily calories consumed is normally distributed and that the confidence interval was based on a simple random sample of 18 observations. Calculate the sample mean, the margin of error, and the sample standard deviation based on the stated confidence interval and the given sample size. Use the...
A through D please
Objective 4: Construct and Interpret a Confidence Interval for a Population Mean 9.2 Estimating a Population Mean 9.2.17 O of 1 Point Question Help A simple random sample of size n is drawn from a population that is normally distributed. The sample mean, x, is found to be 114, and the sample standard deviation, s, is found to be 10. (a) Construct an 80% confidence interval about if the sample size, n, is 23. (b) Construct...
Confidence interval for the population mean: Use of the t distribu... A researcher collected sample data for 10 women ages 18 to 24. The sample had a mean serum cholesterol level (measured in mg/100 mL) of 192.4, with a standard deviation of 5.2. Assuming that serum cholesterol levels for women ages 18 to 24 are normally distributed, find a 99% confidence interval for the mean serum cholesterol level of all women in this age group. Then complete the table below....
2) (3 points) A news report states that the 90% confidence
interval for the mean number of daily calories consumed by
participants in a medical study is (2020, 2160). Assume the
population distribution for daily calories consumed is normally
distributed and that the confidence interval was based on a simple
random sample of 20 observations. Calculate the sample mean, the
margin of error, and the sample standard deviation based on the
stated confidence interval and the given sample size. Use...
Construct a 99% confidence interval to estimate the population mean using the following data. What assumptions need to be made to construct this interval? x=88 20 n 11 What assumptions need to be made to construct this interval? Tre O A. The population mean will be in the confidence interval. en OB. The sample size is less than 30. et c . The population must be normally distributed. D. The population is skewed to one side. With 99% confidence, when...
Construct a 99% confidence interval to estimate the population mean using the data below. X = 46 o = 12 n42 With 99% confidence, when n = 42 the population mean is between a lower limit of (Round to two decimal places as needed.) and an upper limit of Construct a 95% confidence interval to estimate the population mean with X = 102 and o = 25 for the following sample sizes. a) n = 32 b) n = 45...
(3 points) A news report states that the 90% confidence interval for the mean number of daily calories consumed by participants in a medical study is (1750, 1980). Assume the population distribution for daily calories consumed is normally distributed and that the confidence interval was based on a simple random sample of 18 observations. Calculate the sample mean, the margin of error, and the sample standard deviation based on the stated confidence interval and the given sample size. Use the...
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