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Include the outlier. The complete business start time data set with 195 countries has a few with very large start times. To construct the data set for Example 3.21, a random sample of 25 countries was selected. This sample included the South American country of Suriname, where the start time is 694 days. This country was deleted for Example 3.21. Reconstruct the original random sample by including Suriname. Show that the mean has increased to 64 days. (This is a rounded number. You should report the mean with two digits after the decimal.)
Generate a 95% CI for the difference in proportions of participants reporting a reduction of symptoms between the experimental and placebo groups.
Find the power of the test to determine if the the new cream is effective, when the mean percent weight reduction is actually 2.4%. Assume that the population standard deviation is 7% and that the significance level is α=0.03.
The interval 6 to 12 pounds. find the probability that a person on this diet losses more than 11 pounds in the first two months.
tasks are sent to a supercomputer at an average rate of 6 tasks per minute. their arrivals are modeled by a binomial
Causes of death. Government data assign a single cause for each death that occurs in the United States. The data show that the probability is 0.27.
a psychologist is interested in the mean iq score of a given group of children. it is known that the iq scores of the
the results of a recent poll on the preference of voters regarding the presidential candidates are shown below. voters
What is the probability that all three are super-commuters?- What is the probability that none of the three are supercommuters?
Overall, the amount of work-hours involved in the festival preperation is normally distributed around 100 hours withn a standard deviation of 12 hours.
The mean number of flaws per 100 m of material produced on a certain machine at Blanktown Fabrics is 2. If flaws occur randomly, find the probability that in 50 m of material there will be less than 2 flaws.
Step 1 of 5: State the null and alternative hypotheses for the test. Step 2 of 5: Find the value of the standard deviation of the paired differences. Round your answer to one decimal place.
consider the system with components as shown below indicating their failure relationship. the component reliabilities
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