You have measured the blood hemoglobin concentrations in a random sample of 12 males aged 20-29 years and have obtained the following values in mg/dL: [ 14.7, 15.22, 15.28, 16.58, 15.1, 15.66, 15.91, 14.41, 14.73, 15.09, 15.62, 14.92] Calculate the following from the above sample: 1.95% confidence interval for the mean hemoglobin concentration in the population of 20-29 year old males. 2. 99% confidence interval for the mean hemoglobin concentration in the same population 3. 95% confidence interval for the variance and standard deviation of the hemoglobin concentration in this population 4.99% confidence interval for the variance and standard deviation of the hemoglobin concentration in this population Perform a one-sample t-test to check if the mean hemoglobin concentration in the population of 20-29 year old males is 16.0 mg/dL. The test questions will ask you about the final results of the above calculations as well as intermediate results that led to them, so save your work before answering the questions. QUESTION 9 10 points Save Answer What is the lower bound of the 95% confidence interval for the standard deviation of this sample? QUESTION 10 10 points Save Answer What is the upper bound of the 95% confidence interval for the standard deviation of this sample? QUESTION 11 10 points Save Answer What is the critical value of the chi-squared statistic, corresponding to the left (lower) tail of the chi-squared distribution, used to calculate the 99% confidence interval for the variance/standard deviation of this sample? QUESTION 12 10 points Save Answer What is the critical value of the chi-squared statistic, corresponding to the right (upper) tail of the chi-squared distribution, used to calculate the 99% confidence interval for the variance/standard deviation of this sample?
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