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A research team has developed a new medication to treat ADHD. They think that their new medicine will be more effective than the current medication. The team asks local doctors to perform study in which newly diagnosed children with ADHD (n = 20) are matched with other children taking the current medication (n= 20) based on symptoms and physical attributes of the children. The research team will then test all the children after one year to determine the effectiveness of the treatments with a standardized symptom score-sheet (scores can range from 1-50).
1. What is the researcher's independent and dependent variables?
2. What are the null and alternative hypotheses (use the appropriate symbols not words)?
3. What is the appropriate test for the researcher to use?
4.Why is that statistic appropriate?
How many subsets of S contain either the number 6 or the number 15?
Staples has six special drafting pencils for sale, two of which are defective. A student buys two of these six drafting pencils, selected at random.
Digital Switches, Inc., produces a product called the C3PO with an advertised 0.5% failure rate. Calculate the range within which the population average failure rate can be found with 95% confidence.
Your company prepares and distributes frozen foods. The package claims a net weight of 24.5 oz. A random sample of today's production was weighed.
data from six students relating number of hours of preperation x and test score y yield a linear correlation
Can you please derive the mean and variance of a RV X, which has a Poisson distribution.
Why are estimations and confidence intervals important? Do confidence intervals and estimation play a role in the selection of sample size?
a certain species of fish has a weight which is normally distributed with mean u 2kg and standard deviation 0.3 kg.
Heart attack stays. The histogram shows the lengths of hospital stays (in days) for all the female patients admitted to hospitals in New York during.
Tony glanced through the data and noticed that the longest time it took to service a car was 25.33 minutes. Suppose the distribution of times to service a car.
A researcher at UPEI said she wanted to do a study on education. She is interested in how our Soc332 education variable (in years) breaks down. From SPSS, calculate the mean of Education and the standard deviation
the mean diameter of a ball bearing produced by a certain manufacturer is 0.80 cm with a standard deviation of 0.03 cm.
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