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A newspaper reports that the governor s approval rating stands at 65%. The article adds that the poll is based on a random sample of 972 adults and has a margin of error of 2.5%. What level of confidence did the pollsters use?
What is a scatterplot?- What happens when a scatterplot shows the relationship to be curvilinear?- What is a regression equation? How might an employer use a regression equation?
a recent report indicated an average family of four 2 parents and 2 children under the age of 16 spends 500 per month
What is the likelihood the sample mean is greater than $22.50 but less than $25.00?
What is the slope of the least-squares regression line of final-exam scores on pre-exam total scores in this course?
A palmist told x that he has a 10 to 3 chance of getting married this year. What is the probability that he will not get married this year?
This question related to Basic Statistics and discuss about calculation of range, interquartile range, variance and standard deviation
a) Define the decision variables? How many decision variables are there in total? b) What is the objective function? c) What are the constraints including the sign and type restrictions?
Could you explain the Pearson or product-moment correlation? If we were to use a partial correlation, would you want to look at the relationship between two variables while removing the effect of one or two other variables?
Quadratic equations can be solved by graphing, using the quadratic formula, completing the square, and factoring. What are the pros and cons of each of these methods?
a quality control test has five equally likely outcomes - a b c d and e.a what is the probability of c occurring?b what
To test the hypothesis that students who finish an exam first get better grades, Professor Hardtack kept track of the order in which papers were handed in.
1. you are tracking correlation of two funds fund a and fund b. examining current quarter data to date the probability
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