The following data represent the total ozone levels measured in Dobson units at randomly selected locations on earth on a particular day.
269 246 388 354 266 303
295 259 274 249 271 254
(a) Find a jackknife point estimate of the population mean μ ozone level.
(b) Construct a 95% jackknife con?dence interval for the population mean μ.
(c) Compare the con?dence interval obtained in part (b) with that in Example 6.3.3.