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A city council consists of 7 males and 4 females. Two councilors are selected at random to represent the city. What is the probability that
a) both councilors are male? = 21/55
b) one councilor is a male and one a female? =28/55
c) at least one councilor is a female? = 34/55
Make a tree diagram
Advertising coefficient is 200 and t stat is 1.75. Which of the following statements is an accurate interpretation of the situation when using an alpha of .10
Assume there are 21 homes in the Quail Creek area and 9 of them have a security system. Six homes are selected at random: What is the probability none of the six selected homes have a security system?
you just saw an ad on television that states the majority of the population would vote to make smoking illegal. the
suppose that 88 of college men and 82 of college women were employed last summer. a sample survey interviews
Assume a business researcherwishes to test hypothesis that greater proportion of marketing managers keep track of such obligations.
Write three quadratic equations, with a, b, and c (coefficients of x2, x, and the constant) as:
Discuss the assumptions for using a chi-square test. Research articles using and provide practical examples from the reseach to support your assumptions.
montarello and martins 2005 found that fifth-grade students completed more mathematics problems correctly when simple
For the experiment above, let X denote the number of hearts that are drawn. For this random variable, find its expected value and standard deviation.
a clinical trial was conducted to test the effectiveness of the drug zipiclone for treating insomnia in older subjects.
According to a recent survey, the probability that a passengerfiles a complaint with the Department of Transportation about aparticular U.S. airline is .000014. Suppose 100,000 passengers whoflew with this particular airline are randomly contacted..
What is the probability of a type 1 error in this situation? What does it mean?
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