In an Accountemps survey of 150 senior executives, 47% said that the most common job interview mistake is to have little or no knowledge of the company. Construct a 99% confidence interval estimate of the proportion of all senior executives who have that same opinion. Is it possible that exactly half of all senior executives believe that the most common job interview mistake is to have little or no knowledge of the company? Be sure to explain why or why not.
Added by Alba C.
Step 1
First, we need to find the sample proportion (p̂). Since 47% of the 150 senior executives said that the most common job interview mistake is to have little or no knowledge of the company, we can calculate p̂ as follows: p̂ = (47/100) * 150 = 70.5/150 = 0.47 Show more…
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In an Accountemps survey of 150 senior executives, $47.3 \%$ said that the most common job interview mistake is to have little or no knowledge of the company. Test the claim that in the population of all senior executives, $50 \%$ say that the most common job interview mistake is to have little or no knowledge of the company. What important lesson is learned from this survey?
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