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In a 2009 study of the effectiveness of tPa in the treatment of patients who have been hospitalized after myocardial infarction, 9 of 199 males receiving tPa and 13 of 97 males in the control group died within 12 months.
• Use the normal-theory method to test for significant differences in 12-month mortality between the two groups.
• Construct the observed and expected contingency tables for these data.
• Perform the test above using the contingency table method.
Then compare your results using the two different methods.
At.05 significance level is it reasonable to conclude that it takes longer to determination software issues? Determine the p-value?
Determine the probability of selecting sample with a mean of more than $100,000 but less than $112,000.
In the following observational studies, describe changes that could be made to the data collection process that would result in an experiment rather than an observation study. Also, offer suggestions about unseen biases or lurking variables that m..
Use a 5% significance level to test the claim that there appears to be a difference in the effectiveness of the two diets.
Find out the probability that: First electric brush chosen is defective?
A fair coin is flipped 3 times. Compute the odds of flipping 3 tails.
Perform a hypothesis test by using.04 level of significance to find out if there is a difference between the population means.
What is the difference between the R and R-squared terms? What does each tell you? How large should the R-squared term be if you want to show that the two variables are practically related?
When coaching or training athletes, the tests employed to predict performance or determine training methods incorporate statistical methods. Why are these methods so effective?
Discuss the properties of a normal distribution. Why are there infinite possible normal distributions? Why should one assume that sample data represents a population distribution?
Which of the following models satisfies the rules of probability and The event corresponding to the above system functioning properly during one period of operation is
Findout the percentage of trainees earns less than $900 a month utilizing normal distribution.What percentage of trainees earns less than $900 a month?
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