Question
In a survey of 390 randomly selected Canadian adults suffering from allergies, 70% said they were taking Zyrtec. Address parts (a) through (e). [1 pt]
In a survey of 390 randomly selected Canadian adults suffering from allergies, 70% said they were taking Zyrtec. Address parts (a) through (e). [1 pt] (a) Write a sentence carefully describing the population. [1 pt] (b) A 90% confidence interval is created. The margin of error for this survey, rounded to the nearest Whole percent, is 4%. Complete this sentence: We can be 90% confident that the population parameter is between ~ _____ and ~ _____ . [1 pt] (c) Write a sentence or two carefully describing what is meant by the phrase '90% confident'. Your answer must include a description of the specific-to-this-survey event that has a probability of occurring equal to 0.90. [1 pt] (d) Although the value of the population parameter referred to in the statement in part (b) is unknown (hence the reason for having to estimate it with a confidence interval), it does have a value. Use a complete English sentence to describe what this (unknown) number represents in this survey. That is, please describe the population parameter. [1 pt] (e) Which of these interpretations of the confidence interval in part (b) is correct? Identity all correct statements. In those statements involving "samples," this refers to samples of size 390 that are drawn from the same population as you were asked to describe in part (a). A. 90% of samples would have proportions of Zyrtec-taking allergy sufferers that fall in the interval in part (b). B. 90% of samples would give a 90% confidence interval that contains the true population parameter's value. C. 70% of allergy-sufferers take Zyrtec 90% of the time. D. In 90% of all samples, 70% take Zyrtec. E. 90% of samples would give the same confidence interval as the one in part (b). F. Either the true parameter is in the interval in part (b), or it is not.
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