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Basic Statistics
Surgical Intensive Care Unit would like to be better prepared by predicting number of surgical patients they must expect.
Past 15 days illustrates following numbers of surgeries performed. Perform the 3-period moving average, exponential smoothing forecasting using the alpha of .25, and seasonal forecast with 3 seasons.
Day Surgeries1 102 83 124 105 96 147 118 109 1510 1311 1312 1613 1414 1315 18
Forecast for day 16 by using 3-period Moving Average?
Forecast for day 16 by using Exponential Smoothing (alpha = .25)?
Forecast for day 16 by using Seasonality with 3 seasons?
Using the results, describe the effect of an outlier or extreme value on the confidence interval.
six individuals including a and b take seats around a circular table in a completely random fashion. suppose the seats
an offspring of a grey cat is grey with probability 0.6 and white with probability 0.4. an offspring of a white cat is
A student population consists of 55% females and 45% males. A researcher recorded the gender of each student emerging from a theater and found a total of 385 females and 215 males.
what is the value of y when x 3 if the equation of the regression line is y 23.1 - 3.8x
an experiment has four equally likely outcomes e1 e2 e3 and e4.a. what is the probability that e2 occurs?b. what is the
The experiment indicates a sample average diameter x BAR = 5.027 millimeters. Does this sample information appear to support or refute the engineer's conjecture?
horace hadley has just programmed a superb ocr package called read-right pun unintended that has an average error rate
Downs and Abwender (2002) evaluated soccer players and swimmers to determine whether the routine blows to the head experienced by soccer players produced long-term neurological deficits.
a sample of 40 quarters was taken and it was found that the average weight was 5.522 g with a standard deviation of
In the Arnold's Muffler example for the exponential distribution, the average rate of service was given as 3 per hour, and the times were ex-pressed in hours.
if the standard deviation for a population as estimated from a sample is s 5.6 then the standard error for a sample
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