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In an article about investment alternatives, the wall street journal reported that drug stocks provide a potential for long term growth with over 55% of the adult population of the united states taking perscription drugs daily. for adults age 65 and older, 86% take perscription drugs regularly.
The study does provide sufficient evidence to support the claim that less than 75% of college student spend less than $250 per semester on textbooks.
how would you as a researcher and public health professional convince someone who is skeptical about research results
Find the P-value that would be used to determine if the percentage of customers who prefer mint chocolate chip ice has increased at a 5% level of significance.
The response on a scale from 1 to 10 to the question: "Considering all the business you do with Bank of America, what is your overall satisfaction with Bank of America?
1.sodas in a can are supposed to contain an average of 12 ounces. this particular brand has a standard deviation of 0.1
according to a website about salaries the national average salary as of october 2003 for a human resources clerk was
You want to create a 90% confidence interval for the true average number of yards per game he throws. What is the margin of error for this estimate?
Question 1: In a certain city with a population of 1 million people, 5,000 people died last year. In the same city 10,000 were known to have cancer last year, of whom 500 died.
The best we can do is to use one-way ANOVA and make sure to randomize the treatments to the experiment units. Why is such a randomization important?
To test whether there is significant mean difference between two groups using independent sample t test.
Two impendent samples of signs 9 and 8 gave the sum of squares of deviation from their respective means as 160 and 91 can the samples be regarded as drawn from the normal population with equal variance
Calculate the standard deviation for this data. Explain why statisticians typically use the standard deviation rather than the average deviation.
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