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The state agriculture department asked random samples of Indiana farmers in each county whether they favored a mandatory corn check off program to pay for corn product marketing and research. In Tippecanoe County, 263 farmers were in favor of the program and 252 were not. In neighboring Benton County, 260 were in favor and 377 were not.
a. Find the proportions of farmers in favor of the program in each of the two counties.
b. Compute a 95% confidence interval for the difference between the proportions of farmers favoring the program in Tippecanoe County and in Benton County. Do you think opinions differed in the two counties?
In performing a chi-square test of independence, as the difference between the respective observed and expected frequencies decrease, the probability of concluding that the row variable is independent of the column variable increases.
suppose that the mean iq of the 85 students in your classes is 110 and you know that the standard deviation of iq
Visa Card USA studied how frequently young consumers, ages 18 to 24, use plastic cards in making purchases. The results of the study provided the following probabilities.
the probability that a college student is in the normal weight range for hisher height is 0.86. if 20 students are
Is there a significant difference the four testing conditions?
During a 36 year period, lightening killed 2768 people in the US. Assume that this rate holds true today and is constant throughout the year. Find the probability that tomorrow.
A political strategist believes that less than 55% of voters in a certain state support a particular issue. He then commisions a poll of 500 voters and 54% of them support this issue. If = .05, is the political strategist's belief warranted?
a store wishes to predict net profit as a function of sales for the next year. the following table gives the years 1998
what are the degrees of freedom for hartleys test statistic for a one - factor anova with n1 5 n2 8 n3 7 n4 8 n5
Find the probabilities for the following discrete random variables and find the probability that the salad contains more than 5 vegetables on i) a given day and on ii)3 of the next 4 days?
You randomly select six women and ask each if she considers herself a fan of professional baseball. Construct a binomial distribution using n=6 and p=0.39.
a simple random sample without replacement of 30 households was drawn from a city area containing 14 848 households.
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