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Question: An experiment was performed to determine if a new educational program given by pharmacists could reduce the prescribing of a widely used analgesic that had been proven to be inferior to aspirin. The physicians were randomly assigned to either control (n = 142) or the new educational program (n = 140), and their prescriptions of the analgesic were monitored from medical records. After the education program, 58 of the physicians in the control group prescribed the analgesic and 42 in the education group. Test for no difference in the proportion prescribing the analgesic at the α = .05 level.
Use the mixed congruential method to generate the following sequences of random numbers.
What about these descriptive statistics makes you wary or uncomfortable? In other words, if you were a real estate agent, would you go around spouting the answers that you gave above? Explain.
Test the claim that a majority of people prefer the taste of fresh-brewed coffee. Report the large-sample z statistic and its P-value.
a journal article reports that a sample of size 5 was used as a basis for calculating a 95 ci for the true average
From a sampling perspective, why are these estimates so different? Discuss how you would analyze the full-herd data from both a design-based and a model-based.
Why is it useful to know the power of a test?- Explain the difference between the p-value and the significance level α.
We toss an unfair coin 100 times in a row. We play according to following rules: If tail: +$1 If head: -$1.45 P(head=0.4) Estimate chances to earn at least $3 at the end of this experiment.
Suppose that X is a normally distributed random variable with mean 10 and variance 25and we take a simple random sample of size 3 and defineW = 0.4X1 + 0.3X2 + 0.2X3.Find P(W > 12)
A county wishes to estimate the average income of people, where it is known that income levels vary quite a bit among the residents in sections of the county. What type of sampling scheme should be used?
q1. determine the value of the coefficient of correlation for the following datax15829687110436y349510301322550q2. a
construct your own empirical probability situation. that is determine a probability value in relation to your expected
A company is trying to determine how to allocate its $145,000 advertising budget for a new product. The company is considering newspaper ads and television commercials as its primary means for advertising. Formulate an LP model for this problem to..
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