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A machine is supposed to mix peanuts, hazelnuts, cashews and pecans in the ratio 5:2:2:1. A can containing 500 of these mixed nuts was found to have 269 peanuts, 112 hazelnuts, 74 cashews, and 45 pecans. At the 0.05 level of significance, conduct a nonparametric test that the machine is mixing nuts in the ratio 5:2:2:1.
Students whose test scores are in the upper 10% are eligible for scholarship opportunities for college. What is the test score that corresponds to the upper 10% cutoff point of the probability distribution?
A researcher has a series of Likert-scale items and a measure of frequency of absenteeism. He uses each of the Likert-scaled items in a separate bivariate correlation with absenteeism without testing for the assumptions of linear relationships. Is th..
Respond to the questions? In other words, what is the probability that the sample proportion p will be at least 75/300 = 0.25?
One-fourth of the residents of the Burning Ridge Estates leave their garage doors open when they are away from home. The local chief of police estimates that 5 percent of the garages with open doors will have something stolen
A research study reports t(14) = 2.17. How many individuals participated in the study? Is this t statistic sufficient to reject the null hypothesis using a two-tailed test with alpha = 0.05?
If probability of getting sample mean x less than unreported sample mean is 0.025, determine value of the unreported sample mean?
Standard deviation was increased to 40, determine the overall effect on their society? Would this change be a good thing?
An aircraft manufacturer is attempting to determine if the average leg length of the adult male has changed from 44". A sample of 81 men was selected randomly
Random sample of 40 male math professors are selected. What is the probability that the sample mean salary of male math professors will not exceed that of the female math professors?
Is there evidence of difference in median performance between two methods? (Use α = 0.05.)
For what proportion of patients will drug be effective for between 2 and 2.25 hours?
A state meat inspector in Iowa has been given the assignment of estimating the mean net weight of packages of ground chuck labeled "3 pounds." Of course, he realizes that the weights cannot be precisely 3 pounds.
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