How do you plug each problem in the calculator?

Refer to the accompanying data display that results from a sample of airport data speeds in Mbps. Complete Tlnterval Paris (a) through (G) belDW- (1 13.046.22.15) E Click the icon to view a t distribution table. at = 17.598 Sx =16.01712719 n = 50 a. What is the number of degrees of freedom that should be used for nding the critical value ta I 2? df = (Type a whole number.) b. Find the critical value ta ,2 corresponding to a 95% condence level. to! 2 = (Round to two decimal places as needed.) c. Give a brief general description of the number of degrees of freedom. 0 A. The number of degrees of freedom for a collection of sample data is the total number of sample values. O B. The number of degrees of freedom for a collection of sample data is the number of sample values that can vary after certain restrictions have been imposed on all data values. O C. The number of degrees of freedom for a collection of sample data is the number of sample values that are determined after certain restrictions have been imposed on all data values. O D. The number of degrees of freedom for a collection of sample data is the number of unique, non-repeated sample values. A data set includes 109 body temperatures of healthy adult humans having a mean of 98.3 F and a standard deviation of 0.54 F. Construct a 99% confidence interval estimate of the mean body temperature of all healthy humans. What does the sample suggest about the use of 98.6 F as the mean body temperature? Click here to view a t distribution table. Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table. . . . What is the confidence interval estimate of the population mean ? OF