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Your telephone operators receive many different types of calls. Requests for information account for 75% of all calls, while 15% of calls result in an actual order. Also, 10% of calls involve both information requests and order placement
a. What is the conditional probability that a call generated an order, given that it requested information? (This tells you something about the immediate value to your business of handling information requests.)
b. What is the conditional probability that a call did not request information, given that it generated an order? (This represents the fraction of your orders that were "easy.")
c. What is the probability that a call generated an order and did not request information? Interpret this number.
d. Why are the answers to parts b and c different?
e. Are the two events "requested information" and "generated an order" independent? How do you know?
Use the p-value approach and test to determine if the average yearly income of marketing managers in the East is significantly different from the West.
Find P-Value with 0.05 significance level, and state the conclusion about the null hypotheses (reject or fail to reject) With H1: p is not equal to 3/4, the test statistic is z=0.35
The Third National Health and Nutrition Examination Survey (NHANES III, 1988-1994) was conducted by the National Center for Health Statistics, Centers for Disease Control and Prevention.
an instructor computed a least squares regression line to predict final course percentage based on exam 1. she got the
In past years, approximately 20% of all U.S. families purchased potato chips at least once a month. You are interested in determining the fraction of all U.S.
assume that a simple random sample has been selected from a normally distributed population and test the given claim.
this problem should be solved in excel please use separate spreadsheets for different parts.- consider a project
you conducted a chi-square goodness of fit test in your asci 691 capstone project. unfortunately you did not get the
Provide at least five real life examples where legislation and daily life choices have been driven by what could be defined basically as rooted in statistical correlations and regression analyses.
the breaking strength of a rivet has a mean value of 10050 psi and a standard deviation of 505 psi.a what is the
The Web-based company Oh Baby! Gifts has a goal of processing 95 percent of its orders on the same day they are received. If 485 out of the next 500 orders are processed on the same day
1. Find the two-sided 95% confidence interval for the quality difference. Is there a significant difference in quality? How do you know?
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