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According to Mediaweek, there are three methods of advertising on the Web. Method 1 is to serve ads to users who clicked on an icon for the ad. Method 2 serves ads through visits to the company's Web site. And Method 3 uses highly targeted content sites.13 Which method, if any, is most effective? Suppose the following data are the numbers of responders to each method who have eventually made a pur- chase, taken over a random sample of days for each method.
Method 1:
55, 79, 88, 41, 29, 85, 70, 68, 90
Method 2:
42, 21, 38, 40, 39, 61, 44, 26, 28
Method 3:
108, 111, 81, 65, 89, 100, 92, 97, 80
Conduct the test and state your conclusion.
What is the probability that a randomly selected high school senior's score on the mathematics part of the ACT will be more than 29?
1.suppose we are testing the null hypothesis h0 micro 50 and the alternative ha micro ne 50 for a normal population
suppose we roll one die repeatedly and let ni be the number of the roll on which i first appears. find the joint
a branch of a chain of large electronics stores is constructing an end of month inventory of the merchandise in stock.
For each of the following research questions does the situation or research question involve independent samples or paired data?
Which would you use as the point estimate for the average number of days absent for all the firm's employees - What null and alternative hypotheses would be appropriate in evaluating this statement made by the commissioner?
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the data in table are a sample of the cycle time in days to process and pay employee health insurance claims in a
a the access code for a security system consists of five positions. the first position can be any letter 26 while each
pages were randomly selected by three authors a b and c. the big reading company scores are listed below. use a 0.05
You are estimating the cost of engine overhauls a sample of 99 repairs showed an average overhaul of 285 hours with a standard deviation of 60 hours. Calculate a 95% confidence interval for the average overhaul
below are two groupsa 15 22 19 25 16b 32 25 27 33 21 35 30a test to see if the variances are the same give the null and
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