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The director of research and development is testing a new medicine. She wants to know if there is evidence at the 0.05 level that the medicine relieves pain in more than 379 seconds. For a sample of 12 patients, the average time in which the medicine relieved pain was 387 seconds with a standard deviation of 21. Assume the population distribution is approximately normal.
the average weight of adult men is 181 pounds with a standard deviation of 40 pounds.thirty five 35 men were asked
A random sample of 346 individuals is selected, and the individuals are classified according to their smoking habits and the smoking habits of their parents. The results are given in the contingency table below.
consider the experiment of drawing two cards from a shuffled deck and then putting them back. what is the probability
What is the optimal strategy for producing 500 tons of newsprint pulp, 600 tons of packaging pulp, and 300 tons of print stock quality pulp at minimum cost?
Why do Type I and Type II errors exist in hypothesis testing? Do you see some similarities in hypothesis testing and the guilty or not-guilty decisions jurors must reach during trials? Explain.
Put the following syllogisms into standard form, using letters to represent the terms, and name the mood and figure. Then use the two lists of valid syllogistic forms to determine whether each is valid from the Boolean standpoint, valid from the A..
Tourism is one consideration for CoffeeTime's future, A survey of 1,233 visitors to mumbai last year revealed that 110 visited a small cafe during their visit.
if you assume returns follow a normal distribution, which investment has a better chance of giving you $40 million in returns.
The following data provided by a coffee company are the roast time in minutes for five batches of coffee (x) and the resulting shrinkage in percent of the coffee weight(y).
We assume that the population is approximately normally distributed. Find the confidence interval: for a confidence level of 95%:
A system to aid and control the walk of a partially disabled person could use automatic control of the walking motion [25]. One model of a system that is open-loop unstable is shown in Figure DP7.6. Using the root locus select K for the maximum ac..
Past experience shows that the standard deviation of the yearly income of textile workers in a certain state is $400. How many textile workers would you need to sample if you wished to estimate the population mean to within $50.00, with probabilit..
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