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Suppose that a new treatment is successful in curing a common ailment 66% of the time. If the treatment is tried on a random sample of 60 patients, approximate the probability that more than 40 will be cured. Use the normal approximation to the binomial with a correction for continuity. Round your answer to at least three decimal places. Do not round any intermediate steps.
What is the appropriate procedure to test a significant difference in means between the two groups? Use the critical -value method.
The article "Human Lateralization from Head to Foot: Sex-Related Factors" (Science, 1978: 1291-1292) reports for both a sample of right-handed men and a sample of right-handed women the number of individuals whose feet were the same size, had a bi..
a survey was conducted of 611 office workers to determine telephone answering practices i.e how many were able to
suppose that n items are sampled from a manufacturing process and the number of defective items found among these is x.
a nonprofit company concerned with the school dropout rates in a nearby stats has designed a tutoring program at
a. What is the probability that A occurs? (Round your answer to 2 decimal places.) b. What is the probability that B2 occurs? (Round your answer to 2 decimal places.)
Construct a 95% confidence interval estimate for the population mean amount spent for lunch ($) at a fast-food restaurant, assuming a normal distribution
research has shown that 80 of patinets with a particular chronic condition improve as a result of surgery. assuming
the local newspaper was interested in the proportion of people that would vote in favor of a bond issue to add a new
Decide whether the normal sampling distribution can be used. If it can be used, test the claim about the population proportion p at the given level of significance α using the given sample statistics.
q1. how many independent variables are in a 4 x 6 factorial design? how many conditions cells are in this design?q2.
Explain clearly, in your own words, what is a Type I error in this context.
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