Question: I got this wrong on my practice exam. Can you help with step-by-step solution so I can see where i went wrong? Thank you very

I got this wrong on my practice exam. Can you help with step-by-step solution so I can see where i went wrong? Thank you very much!

A public opinion researcher is studying the favorability of a prominent politician. Based on a random sample of 100 adults, he finds that the proportion who view this politician favorably is 0.40. Assuming that you know the standard deviation in the population is 0.50, what is the upper bound of a two-sided 95% confidence interval, approximately (rounding to two decimal places)?

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