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Suppose that mi allergist wishes to test the hypothesis that at least 30% of the public is allergic to some cheese products. Explain how the allergist could commit (a) a type I error; (b) a type II error.
Your supervisor has asked you to conduct a survey about consumers' buying habits. For this task, you surveyed 100 men and 100 women at a local shopping mall.
You are given the following frequency distribution for the number of errors 55 students made in a test:
Using the 0.10 level of significance, is there evidence that the population mean is above $300?
the test scores of a class consisting of 30 students are given in the table below. perform thenbspchi-square and the
At 0.05 level of significance, is there evidence of significant relationship between age group and where people mainly get their news? If so, describe the relationship.
Students revealed an average cost of books of $370 per student. The Dean of Students believes that the costs are greater this semester. What is the test value for this hypothesis?
a shipping company claims its boxes can carry 36 lb. the production design allows the boxes to be uniform in
Use this information to find the probability that an HRO officer selected from the group surveyed had problems with either employee absenteeism or employee turnover.
a manufacturer of widget will accept a box of widgets is 10 of the widget are randomly selected without replacement
as a person who understands and uses statistics to solve problems in business you know that you must use the right
1. suppose 2 of cotton fabric rolls and 4 of nylon rolls contain flaws. of the rolls used by a manufacturer 70 are
Customers surveyed used electricity to heat their homes. If the company wishes to be 99% confident to within 3%, how large a sample would be needed?
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