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An ABC news program reported that a standard method for rendering patients unconscious resulted in patients waking up during surgery. These individuals were not only aware of their plight, they suffered from nightmares later.
Some physicians tried monitoring brain function during surgery to avoid this problem, the strategy being to give the patient more medication if they showed signs of regaining consciousness, and they found that among 200,000 trials, zero patients woke during surgery.
However, administrators concerned about cost argued that with only 200,000 trials, the probability of waking up using the new method could not be accurately estimated. Verify that a 0.95 confidence interval for p, the probability of waking up, is (0, .000015).
in a brand awareness study if 25 of a group of 35 males identify the brand correctly and 15 of a group of 35 females
Perform a two-tailed hypothesis test on both the legal services satisfaction and the sentence satisfaction variable's data using a .05 significance level.
When using a general LP model for transportation problems, if there are 4 sources and 3 destinations, which of the following statements is true?
One sample has a variance of s2=6 and a second sample has a variance of s2=8. If the two samples are the same size (n1=n2), then what is the pooled variance for the two samples?
Compare the mean absolute error, root mean square error, and the mean absolute percent of error for all four of these forecasting techniques - what do these statistics tell you about the forecasts? Which one is the best forecast and why?
The simplest useful numerical description of a distribution consists of measure of center and measure of spread. The Median is the 50th percentile. Q: Why is not the Mean the 50th percentile?
Two governors in U.S. history have been successfully recalled. The second was Gray Davis of California in 2003. Who was the first and what year did this occur?
No children that is equal to the value obtained by the census. Give the z statistic (rounded to two decimal places) and the P-value. What do you conclude?
a batch contains 34 bacteria cells. assume that 12 of the cells are not capable of cellular replication. six cells are
which of the following is true for a symmetrical distribution?a. mean modeb. median modec. the mean median and mode
assume the random variable x is normally distributed with mean u 74 and standard deviation q8. find the indicated
Metal detectors at airports are used to determine whether passengers are carrying weapons. If the null hypothesis states that a passenger isn't carrying a weapon, a type I error would occur whenever
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