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Question 1
A 95% confidence interval obtained from a sample of 100 outpatients for the true population mean normal mean systolic blood pressure is given by (114 mmHG, 120 mmHG). Provide a correct interpretation of this interval. Can you think of other interpretations that would also be correct?
This confidence interval came from a single sample, would we get the same interval if we obtained a different set of 100 patients? What does this imply about your interpretation of the given interval? If we wanted a 99% confidence interval instead, can you tell whether it would be narrower or wider? Can you tell by how much?
Question 2
Consider your exposure and define what the p-value represents. Why can we compare it to alpha (the significance level of the test)?
Consider what a p-value tells you that a confidence interval does not?
What does a confidence interval tell you that a p-value does not?
Which one is more useful? Make sure to support your ideas with reputable source
A farm brings 15 tons of watermelon to market. Find a 90% confidence interval for the population mean cash value of this crop. What is the margin of error?
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