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In order to estimate the proportion of families who prefer female baby-sitters to male baby-sitters with an error of at most 8 percentage points and with at least 95 percent confidence, how large a sample should be taken?
What is the probability of finding exactly four watch soap operas?
At the 5% level of significance test whether the bottling process is carried out accurately or whether the filling machinery needs calibration. Use both the critical and the p-value approaches.
A company has set a goal of developing a battery that lasts over 5 hours in continuous use in a sample of 42 of these batteries the mean life time was 306.25 hours with a standard deviation of 29.31
Using an alpha of .05, what can you conclude about homogeneity of variance from the output? Word process your responses on the SPSS output pages.
Recognize strategies that were utilized to control for nuisance variables and minimize threats to valid inference making.
Average Precipitation For the first 7 months of the year, the average precipitation in Toledo, Ohio, is 19.32 inches. If the average precipitation is normally distributed with a standard deviation of 2.44 inches, find these probabilities.
If we repeated this procedure many, many times, only 5 percent of the 95 percent confidence intervals would fail to include the mean Math SAT score of the population of all students at this college.
Finding Normal probabilities using standard normal table or Excel built in functions
Entities arrive at single-server queuing system at average of 4 per hour and server can service average of 5 per hour. Mean in the queue is?
Five cards are drawn from an ordinary deck without replacement. Find the probability of getting:
Critically discuss some examples of literature reviews and statistics used and available at your work place or organization? What are they used for and how are they determined?
We are interested in determining whether or not the opinions of the individuals (as to Yes, No, and No Opinion) are uniformly distributed.
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