According to an expert for the airline industry, 12% ofAmericans are afraid to fly.Suppose 1100 Americans are sampled. (Give resultsaccurate to at least 4 decimal places.)a. Of the 1100 people sampled, 157 respond that theyare afraid to fly. What is the sample statistic ô ?p= 0.1427b. Under the assumption that the industry expert's claimthat 12% of Americans are afraid to fly is valid, whatis the probability that the survey in part (a) wouldresult in a p that is same or lower as the one found?c. Under the assumption that the industry expert's claimthat 12% of Americans are afraid to fly is valid, whatis the probability that the survey in part (a) wouldresult in a p that is between 11% and 13%?

Sample size, Population proportion,

Answered: According to an expert for the airline…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The patient recovery time from a particular surgical procedure is normally distributed with a mean of 5.3 days and standard deviation of 1.1 days. Use your graphing calculator to answer the following questions. Write your answers in percent form. Round your answers to the nearest tenth of a percent.a) What is the probability of spending less than 8 days in recovery? %b) What is the probability of spending more than 5 days in recovery? %c) What is the probability of spending between 5 days and 8 days in recovery? %
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A study conducted by researchers was designed "to determine if application of duct tape is as effective as cryotherapy in the treatment of common warts." The researchers randomly divided 6969 patients into two groups. The 3535 patients in group 1 had their warts treated by applying duct tape. The 3434 patients in group 2 had their warts treated by cryotherapy. Once the treatments were complete, it was determined that 6969% of the patients in group 1 and 8585% of the patients in group 2 had complete resolution of their warts. The researchers concluded that cryotherapycryotherapy is significantly more effective in treating warts than duct tapeduct tape. Complete parts (a) through (d) below.(a) What is the research objective? A.To determine if duct tape is as effective as cryotherapy in the treatment of warts B.To determine if cryotherapy is as effective as duct tape in the treatment of warts C.To determine if cryotherapy is effective in the treatment of warts D.To determine if…
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