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A manufacturer of floor wax has developed two new brands, A and B, which she wishes to subject to homeowners' evaluation to determine which of the two is superior. Both waxes, A and B, are applied to floor surfaces in each of 15 homes. Assume that there is actually no difference in the quality of the brands. What is the probability that ten or more homeowners would state a preference for
a brand A?
b either brand A or brand B?
When someone buys a ticket for an airline flight, there is a 90% probability that a person will not show up for the flight. Air America books 15 people on a commuter flight that can only seat 13 passengers.
Construct a 98 percent confidence interval for the true proportion of ranch style homes
Use SPSS and generate all necessary summary statistics and figures (e.g. boxplots, histograms and/or scatter plots) to describe the relationship between the workers' mental health
1. Calculate the residuals from the least-squares fitted model for the pH mea surement data set phmeas .txt and plot them against the fitted values. What does this indicate about the fitted model?
a bag contains 3 red marbles 4 green ones 1 lavender one 3 yellows and 2 orange marbleshow many sets of five marbles
What is the probability of selecting 10 production employee at random on a hot summer day and finding that none of them are absent.
If 200 passengers take this flight, find the binomial and Poisson probability of no platinum flyers (round your answer to 4 decimal places).
there are two types of machines called type a and type b. both type a and type b can be used to produce a certain
Find the sample size for the 95% confidence interval used to estimate the population proportion.
the sugar content of the syrup in canned peaches is normally distributed. a random sample of n 10 cans yields a sample
When 306 students are randomly selected and surveyed it is found that 115 own a car. Find a 99% confidence interval for the true proportion of all college students who own a car.
Bob compares his SAT Verbal score of 400 to Marge's ACT Verbal score of 20. "I beat you," he exclaims. "My score is 20 times your score!" Although his multiplication is good, his logic is faulty. Explain why.
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