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Question: Meditation for anxiety An experiment that claimed to show that meditation lowers anxiety proceeded as follows. The experimenter interviewed the subjects and rated their level of anxiety. Then the subjects were randomly assigned to two groups. The experimenter taught one group how to meditate and they meditated daily for a month. The other group was simply told to relax more. At the end of the month, the experimenter interviewed all the subjects again and rated their anxiety level. The meditation group now had less anxiety. Psychologists said that the results were suspect because the ratings were not blind. Explain what this means and how lack of blindness could bias the reported results.
First-order regression model was fit to data. Part of printout follows?
Find the empirical probability of an individual being born male - In the United States, more male babies are born than female. In 1998, 2,264,031 males were born and 2,187,419 females were born. Find the empirical probability of an individual bein..
A stockbroker at Critical Securities reported that the mean rate of return on a sample of 10 oil stocks was 12.6 percent with a standard deviation of 3.9 percent. The mean rate of return on a sample of 8 utility stocks was 10.9 percent with a standar..
Using the table below, compute the spearman rank correlation coefficient for the aggressiveness scores. Does this suggest that both twins tend to be similar in degrees of aggressiveness?
You are playing a game by drawing a card from a standard deck and replacing it. If the card is a face card, you win $30. If it is not a face card, you pay $2.
How many models are fit at Step 1 of the stepwise regression?- How many models are fit at Step 2 of the stepwise regression?
Suppose a consistent signal means a variance of at most 230 mw2. Is there any evidence of an inconsistent signal in this company's coverage area?
q1. according to a study several years ago the average bmw driver earns 82 600 per year. suppose a researcher believes
a brewerys filling machine is adjusted to fill bottles with a mean of 31.2 oz. of ale and a variance of 0.003.
If the mean (Mu) diastolic blood pressure in a certain age group is 80, and the standard deviation (Sigma) is 10, what is the probability that, in a sample of 100, the sample mean (X) is > 85?
Develop a 95% confidence interval for the population mean. Interpret the result.
gpa of scsu students is normally distributed with standard deviation 0.8. the average gpa of a random sample of 25
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