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Dr. Benjamin Shockley, a renowned social psychologist, interviewed 150 executives high level and found that 42%...

Dr. Benjamin Shockley, a renowned social psychologist, interviewed 150 executives high level and found that 42% of them could not add fractions correctly.

a) Estimate the standard error of the proportion.

b) Construct a 99% confidence interval for the true proportion of high-level executives who cannot add fractions correctly.

Math   Statistics-And-Probability   
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