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In random samples of 250 persons with low incomes, 200 persons with average incomes, and 150 persons with high incomes, there were, respectively, 155, 118, and 87 who favor a certain piece of legislation. Use the 0.05 level of significance to test the null hypothesis θ1 = θ2 = θ3 (that the proportion of persons favoring the legislation is the same for all three income groups) against the alternative hypothesis that the three θ's are not all equal.
A restaurant has an ice cream counter where it sells two main products, ice cream and frozen yogurt. The restaurant makes one order for ice cream and yogurt each week, and the store has enough space for 115 gallons of both products.
telephone numbers at uc davis consist of 7-digit numbers the first 3 of which are 752. it is estimated that about
an experimenter has prepared a drug dosge level that she claims will induce sleep for 80 of the people suffering from
Lemarks Studios is looking for advertiser dollars to help with production costs on its newest blockbuster movie. Lemarks Studios has several companies that want product placement in the film.
an economic department at a state university with five faculty members-anderson box cox carter and davis-must select
"A job in an insurance office involves telephone conversations with policyholders. The office man- ager estimates that about half of the employee's time is spent on the telephone.
Excel users should note that any row containing one or two empty cells must be removed. Use a 5% significance level. For each of the following variables, conduct a test to deter- mine whether there are differences between the three political party..
10 people taste wine A and wine B, X= denote the number prefer A. Assume that all others prefer B. These people random sample..
Use the ustudy.sav file. This time, consider that you collected data only on ACADRNK, YRSPHD, SALARY, and PUBLCTN from the 20 faculty. The purpose of your analysis is to group this faculty into separate clusters based on the data you have.
The population is 500 pounds. At a 80% level, how many elephants need to be weighed so the average weight will be accurate to within 350 pounds?
in studies for a medication 13 percent of patients gain weight as a side effect. suppose 514 patients are randomly
q1. when do americans decide what to make for dinner? an outline survey indicated that 74 of americans decided either
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