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Suppose that two students named Gwyneth and Josephine have a total of 20 CDs in their room, consisting of 5 blues CDs and 15 reggae CDs. Each of the students chooses 7 CDs at random (without replacement), with all choices equally likely. (Thus, altogether, 6 CDs remain unchosen.) Let X denote the number of blues CDs that Gwyneth selects. Let Y denote the number of blues that Josephine select. find thecovariance between x and y
1. unemploymenta. suppose that 98 million people work and 5 million seek work. what is the unemployment rate?b. now
The makers of Compute-All know that in the past, 40% of their sales were from people under 30 years old, 45% of their sales were from people who are between 30 and 50 years old, and 15% of their sales were from people who are over 50 years old...
Diane Brown is the mayor of a large city. Lately, she has become concerned about the possibility that large numbers of people who are drawing unemployment checks are secretly employed. Her assistants estimate that 40% of unemployment benefi..
question 1 a gantt chart represents mainlyanswer an immediate identification of predecessor task. a record-keeping
A statistics professor plans class so carefully that the lengths of his classes are uniformly distributed between 45.0 and 55.0 minutes. find the probability that a given class period runs greater than 50.75 minutes? find the probability of se..
Identify stories that exist in the data provided. A "story" is an analysis of what the data shows rather than just what the data says. Said another way, how might you interpret the data?
What are some of the main uses of a regression analysis
Locate the results of a recent survey
Analysis of Variance SPSS instructions: Use the five steps of hypothesis testing to determine whether the observed differences in the number of activities in the following table performed by the three groups are statistically significant at the .05 l..
question 1an airline was interested in measuring the length of time customers have to wait in the queue prior to
Is exposure to UV radiation associated with skin cancer
The student government at a university conducted a study
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