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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 303295 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).
A snack food manufacturer selected a sample of 15 bags of pretzels off the assembly line and weighed their contents. If the sample mean is 10.0 and the sample standard deviation is 0.15
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Assume it is possible to adjust the scales in a linear manner to read Y = aX+b. How should a and b be chosen in order that Y has the same mean but fewer than 2% of the readings of Y exceed 4.2 gm.
Compute mean absolute percentage error (MAPE) of the forecasts.
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Determine the mean production of acorn in the last six years and calculate the standard deviation of data relative to acorn production.
Find the maximum total allowable weight if we want a 0.975 probability that this maximum will not be exceeded when 16 males are randomly selected.
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