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Question: Eisenberg and colleagues (15 June 1993) used meta-analysis to examine the effect of "cognitive therapies" such as biofeedback, meditation, and relaxation methods on blood pressure. Their abstract states that "cognitive interventions for essential hypertension are superior to no therapy but not superior to credible sham techniques" (p. 964). Here are some of the details from the text of the article: Mean blood pressure reductions were smallest when comparing persons experimentally treated with those randomly assigned to a credible placebo or sham intervention and for whom baseline blood pressure assessments were made during a period of more than 1 day. Under these conditions, in- dividuals treated with cognitive behavioral therapy experienced a mean reduction in systolic blood pressure of 2.8 mm Hg (CI, -0.8 to 6.4 mm Hg) relative to controls. (p. 967) The comparison included 12 studies involving 368 subjects. Do you agree with the conclusion in the abstract that cognitive interventions are not superior to credible sham techniques? What would be a better way to word the conclusion?
Determine that your peer's response reveals errors in thinking or understanding the readings or concepts. Discuss these by pointing to the correct information in the literature
Developing the histogram and pie chart for the sample data.
A package of documents needs to be sent to a given destination, and delivery within one day is important. To maximize the chances of on-time delivery.
Construct the two fold association table and calculate the coefficient of association - number of passed candidates exceeded the number of failed candidates by 310. Boys failing in the examination numbered 88.
The old operation to restore hearing is known to be 30%sucessful. A new operation that restores hearing is being researched. It is known that 88 out of 225 operations using this new method have been successful. Can we justify the claim that the new m..
suppose that y1 y2 . . . yn denote a random sample from an exponentially distributed population with mean?find the mle
Cans of Paint Purchased During a recent paint sale at Corner Hardware, the number of cans of paint purchased was distributed as shown. Find the mean, variance, and standard deviation of the distribution.
We would like to estimate the true proportion of Winnipeg voters who support Mayor Brian Bowman to within 2% with 96% confidence. What sample size is required?
1. a bus starts with eight people 2 of which are jack and diana and stops at 12 locations. assuming nobody else gets on
Find the 95% confidence interval of the mean score for all golfers if this is a sample of 110 golfers instead of a sample of 93.
Create a histogram for these ages.- Create a stem-and-leaf plot for these ages.- Create a dotplot for these ages.- Describe the shape of this dataset.
Find the percentile that corresponds to an age of 40 years old - List them in order from least to greatest all with a comma in between, no space.
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