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The taxicab company claims that the mean travel time between two destinations is about 21 minutes. Reject this claim. Explain how to write the null and alternative hypothesis.
The owner of a fish market has an assistant who has determined that the weights of catfish are normally distributed, with a mean of 3.2 pounds and a standard deviaition of 0.8 pound.
Assume that you have selected 10 students enrolled at your college and have collected data for these three variables:
An article contained the following observations on degree of polymerization for paper specimens for which viscosity times concentration fell in a certain middle range.
An insurance agent has appointments with four prospective clients tomorrow. From past experience the agent knows that the probability of making a sale on any appointment is 1 out of 5.
Because of a recent incident in which a number of people became ill after eating undercooked hamburger meat, intensive interest has centered around the cooking time for hamburger patties.
Critically discuss the Central Limit Theorem? How large should the sample size be if the underlying distribution of the population values are:
There are many nonparametric tests that have been developed over the years. Explain what nonparametric tests are and why they were developed.
An environmentalist estimate that the mean waste recycle by adults in the country is more than 1 pound per person per day. You want to test this claim, you find that the mean waste recycled per person per day for a random sample of adults in the c..
Compute the Kappa statistic and its standard error regarding reproducibility of the diagnosis of dyspnea in the clinic.
The producer of a TV special expected about 40 percent of the viewing audience to watch a rerun of a 1965 Beatles Concert. A sample of 200 homes revealed 60 to be watching the concert.
If you have a statistical package that computes binomial probabilities, find the probability that at least five funds outperform the market in all 10 years.
The mean weight of newborn infants at a community hospital is 6.6 pounds. A sample of seven infants is randomly selected
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