# 1. In a recent study, the researchers want to find the information about the percentage ofadults who get their news online.a. In a Harris poll of 3026 adults, 38% said that they prefer to get their news online.Construct a 95% confidence interval estimate of the percentage of all adults whosay that they prefer to get their news online. Can we safely say that fewer than50% of adults prefer to get their news online?b. If we want to conduct another survey, how many adults must we survey in orderto be 90% confident that we are within four percentage points of the populationpercentage? Assume that we have no prior information about the populationproportion.

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Step 1

Given data

n = 3026

proportion of people who prefer to get their news online = 0.38

Step 2

b)
population proportion is not given,
so, we assume equal proportion i.e. p =...

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