Question: You may need to use the appropriate technology to answer this question. According to Thomson Financial, last year the majority of companies reporting profits

You may need to use the appropriate technology to answer this question.

You may need to use the appropriate technology to answer this question. According to Thomson Financial, last year the majority of companies reporting profits had beaten estimates. A sample of 157 companies showed that 109 beat estimates, 23 matched estimates, and 25 fell short. (a) What is the point estimate of the proportion that fell short of estimates? (Round your answer to four decimal places.) P=0.1592 (b) At 95% confidence, determine the margin of error for the proportion that beat estimates. (Round your answer to four decimal places.) 0.0572 Provide a 95% confidence interval for the proportion that beat estimates. (Round your answers to four decimal places.) 0.102 x to 0.2164 (c) How large a sample is needed if the desired margin of error is 0.05? (Round your answer up to the next integer.) 206 Need Help? Read It

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