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A survey of 1305 people who took trips revealed that 96 of them included a visit to a theme park. Based on those survey results, a management consultant claims that less than 8 % of trips include a theme park visit. Test this claim using the ?=0.01significance level.
(a) The test statistic is:
(b) The P-value is:
Finnish Furniture manufactures tables in facilities located in three cities- Reno, Denver, and Pittsburgh. The tables are then shipped to three retail stores located in Phoenix, Cleveland, and Chicago.
What is wrong with this design? What confounds could be leading to the results of improved memory and problem-solving skills?
Prepare a 90% confidence interval for the true proportion
a marketing survey involves product recognition in new york and california. of 558 new yorkers surveyed 193 knew the
Assuming that a plane make a safe flight if at least one-half of its engines run, determine whether a 4-engine plane or 2-engine plane has the higher probability for a successful flight.
suppose that two 4-sided dice are rolled that is each die has faces with numbers 1 2 3 amp 4. what is the probability
Telephone interviews were conducted on a representative sample of 1,003 adults living in the United States. For this sample, 506 adults admitted that they have paid to download music
an insurance company is reviewing its current policy rates. when originally setting the rates they believed that the
If the auditor takes a simple random sample of 93 accounts, what is the probability that the mean of the sample will be within 110 dollars of the population mean?
a randomized trial is conducted to evaluate the efficacy of a new cholesterol lowering medication. the primary outcome
Would you conclude that your data set is approximately normal? If so, what percentage of your data values lie:
a computer chip manufacturer rejects 6 percent of the chips produced because they fail to work properly when tested.
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