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Consider an experiment in which our sample space is S={1,2,3,4,5,6,7}.Also E1={1,2,4}, E2={2,3,4,5,6}, E3={7}. Describe the outcomes in each one of the following events:
a. E1 U E2b. E3' (complement of E3) c. E3 ? E2d. E1 ? E2e. (E1 ? E2)'
raw materials are studied for contamination. suppose that the number of particles of contamination per pound of
The distribution of IQ scores is normal, what proportion of the population would score higher than Bob? Lower than Bob?
If one employee is randomly selected, find the decimal probability (four decimal places) that his/her commute takes the following amount of time.
The U.S.Census Bureau announced that the median sales price of new homes sold i April 2009 was $221,660, and the mean sales price waas $274,300. Assume that the standard deviation of the prices is $90,000.
The event "the price of stock X has increased and the price of stock Y has not increased" may be written as??
Median $2.4 million, modal sales $2.6 million and standard deviation of distribution is $500,000. Determine the Pearson's coefficient of skewness?
A random sample of 1001 University of California faculty members taken in December 1995 was asked, "Do you favor or oppose using race, religion, sex, color, ethnicity or national origin as a criterion for admission to the University of California?
Maria Gomez, a research analyst in the state department of health, has undertaken a study of the possible consequences of overbuilding hospital facilities.
It has been reported that 80% of taxpayers who are audited by the Internal Revenue Service end up paying more money in taxes. Assume that auditors are randomly assigned to cases, and that one of the ways the IRS oversees its auditors is to monitor..
What is the probability that a randomly selected student will have a score of 80 or higher? If there were 97,680 students with scores higher than 91, how many students took the test?
Suppose 12% of these workers work more than 48 hours. Based on this percentage, what is the standard deviation of number of hours worked per week for those workers.
A random sample of 100 adult workers, 60 men and 40 women, is selected in a large Midwestern city. Of the group, 42 men and 17 women are union members.
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