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A marketing survey involves product recognition in New York and California. Of 558 New Yorkers surveyed, 193 knew the product while 196 out of 614 Californians knew the product. Construct a 99% confidence interval for the difference between the two population proportions. Assume that the samples are independent and have been randomly selected.
the following data represent the number of passengers per flight in a sample of 50 flights from wichita kansas to
For thefts involving more than $1,000, there is an inverse relationship between the value of the goods stolen and the length of the prison sentence given to the thief.
Suppose the counselor found the sum of squared deviations from the mean of the sample to be 135. Given that he tested 10 people, what would the estimated population variance be?
A company is filling bags of rock salt to a level of 50 pounds. It believes that all bags are filled correctly, but would like to use a hypothesis test with an alpha of 0.05 to check this belief.
Calculate the limits within which the weight of the packets should lie assuming that the machine is not been classified as faulty.
Insurance policy from company A costs $300 a year but guarantees to replace any losses due to theft. Create the decision tree.
Professor wishes to determine whether prior statistical knowledge assists students in their performance on the final exam. What is the relationship between pretest scores and final exam scores after controlling for cumulative GPA. What SPSS test w..
question samples of n 5 units are taken from a process every hour. the xoline and r values for a particular quality
the poll claims that 70 of the population is for a new amendment. a random sample of 49 people showed that 27 voted in
A female offspring has no chance of inheriting the disease. Further suppose that 51.3% of births are male. What is the probability that a randomly chosen child will be affected by the disease?
Hamburger Joe's sells the best burgers in town. The variable unit cost for making one burger is $.97. The fixed cost of making burgers for 12 months will be a total of: $140,000.
Determine the test value? Use α = 0.05. (Use the variances unequal formula).
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