9/ Researchers conduct a survey using the question: How many days did you exerci
ID: 3321342 • Letter: 9
Question
9/ Researchers conduct a survey using the question: How many days did you exercise in the last month? They reported a 95% confidence interval of (7.32, 11.25) days for the estimated number of exercise days among the 150 participants. Suppose the other researchers were interested in a 99% confidence interval for the same data. Will the interval be narrower or wider than the 95% interval?
The interval will be narrower because the standard error will be smaller.
The interval will be wider because the standard error will be larger.
The interval will be narrower because the standard error will be smaller.
The interval will be narrower because will be smaller.
The interval will be wider because will be larger.
The interval will be wider because the standard error will be larger.
Explanation / Answer
Option-C) The interval will be wider because Zalpha will be larger.
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