Suppose an advertising company wants to determine the current percentage of customers who read print magazines. how many customers should the company survey in order to be 98% confident that the estimated (sample) proportion is within 5 percentage points of the true population proportion of customers who read print magazines?

543

Step-by-step explanation:

Given : Level of confidence = 0.98

Significance level :

By using the normal distribution table,

Critical value :

Margin of error :

The formula to find the population proportion if prior proportion of population is unknown  :-

Hence, the company survey minimum sample having size  =543

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step-by-step explanation: