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Question: Read the paper titled "Plasma Fetuin -A is associated with the Severity and Cognitive Impairment in Mild to moderate Alzheimer's Disease" Edward R. Smith, RaminNilforooshan et al. Journal of Alzheimer's disease, 2010.
Identify the primary outcome measure and calculate using PS-sample size program to determine the power of the primary outcome measure, stating clearly the measures that were used to arrive at the result. Use 0.05 as type I error for the calculation. Also comment on the value of the difference whether this was clinically relevant or not.
Hypothesis test for one population mean - What is the alternative hypothesis and What is the null hypothesis?
a final exam in math 160 has a mean of 73 with a standard deviation of 7.8. 40 students are randomly selected and
A developmental psychologist is studying memory development in children. He is interested in determining the exact age at which children began to recall long-term episodic memories.
Citrus Rental is a popular car rental agency that has a history of having too few cars available, so that its available cars are overdriven. The mean monthly mileage over the years for Citrus cars has been about 1550 miles per month.
Find the probability distribution for X defined as the number of defective items drawn (Hint: You have to find P(X=0), P(X=1) and P(X=2). You may have to use both multiplicative and additive rules to find P (X=1)).
What is the probability that a simple random sample of automobile insurance polocies will have a sample mean within 25.
The mean amount purchased by a typical customer at Churchill's Grocery Store is $23.50 with a standard deviation of $5.00. Assume the distribution of amounts purchased follows the normal distribution. For a sample of 50 customers, answer the follo..
2 cards drawn from a 52 but before the second card is drawn you put the first one back and reshuffle the deck. Are the outcomes on the two cards independent and why?
The Oregon health & science university's news website gives information on a study that found that some commercial cigarette brands contain 10 to 20 times higher percentages of nicotine in the "free-base" form, that is, the form thought to be ..
Assume X is an exponential random variable with parameter lambda. Find the method of moments estimator for lambda.
In a marketing study, 100 consumers were asked to select the best digital music player from the iPod, the iRiver, and the Magic Star MP3. To summarize the consumer responses with a frequency table, how many classes would the frequency table have?
With a standard deviation of 0.5. At a .05 significance level, can we conclude college students watch fewer videos per month than high school students?"
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