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What type of sample (sample method) do we need in order to obtain a representative sample from the larger population?
There are 4000 mangoes in a shipment. It is found that it a mean weight of 15 ounces with a standard deviation of 2 ounces.
Gather three of your favorite packaged foods; perhaps one from each: breakfast, lunch and dinner. Use the model explained in the "Are You Sure It's Fat Free?" to analyze, through the mathematical formula explained the fat content and protein conte..
A manufacturing company produces plastic bottles for the dairy industry. Some of the bottles are rejected because of poor quality.
In each of the following cases, the variable represents one way that a sample can be stratified in a study.
Finds the average life time for this sample is 970 hour and the standard deviation is 80 hours. Can the firm claim that the average life time is 1000 hours at the 5% level of significance?
Flight times An airline flies the same route at the same time each day. The flight time varies according to a Normal distribution with unknown mean.
Assuming that Mendel's proportion of 3/4 is correct, find the probability of getting 787 or fewer plants with long stems among 1064 offspring plants. compare answers with binomial and normal approximation.
A certain project has three activities on its critical path. Activity A's normal completion time is five days. It can be crashed to three days at a cost of $500
suppose that in a large city 60 of the voters favor the construction of a new ball park. in a survey where voters are
Find the probability that the number of white flip-flops purchased will be within two standard deviations of the mean. Compare this with the predicted result from Chebyshev's rule.
Arthur Schopenhauer, which view of experience seems closest to how you view the world? Briefly explain this philosopher's view as it compares to your view.
seventy-eight percent of the light aircraft that disappear while in flight in a certain country are subsequently
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