Question: Suppose a survey of 275 executives is taken in an
Suppose a survey of 275 executives is taken in an effort to determine what qualities are most important for an effective CEO to possess? The survey participants are offered several qualities as options, one of which is “communication.”One hundred twenty-one of the surveyed respondents select “communicator “as the most important quality for an effective CEO. Use these data to construct a 98% confidence interval to estimate the population proportion of executives who believe that “communicator” is the most important quality of an effective CEO.
Relevant QuestionsFor each of the following sample results, construct the requested confidence interval. Assume the data come from normally distributed populations.a. n = 12, x̄ = 28.4, s2 = 44.9;99% confidence for σ2b. n = 7, x̄ = 28.4, s ...Determine the sample size necessary to estimate for the following information.a. σ = 36 and E = 5 at 95% confidenceb. σ = 4.13 and E = 1 at 99% confidencec. Values range from 80 to 500, error is to be within 10, and the ...Construct 90%, 95%, and 99% confidence intervals toEstimate µ from the following data. State the point estimate. Assume the data come from a normally distributedpopulation.Is the environment a major issue with Americans? To answer that question, a researcher conducts a survey of 1255 randomly selected Americans. Suppose 714 of the sampled people replied that the environment is a major issue ...A regional survey of 560 companies asked the vice president of operations how satisfied he or she was with the software support received from the computer staff of the company. Suppose 33% of the 560 vice presidents said ...
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