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Wireless only. Are customers giving up their landlines and relying on wireless for all of their phone needs? Surveys have collected data to answer this question.27 In June 2006, 10.5% of households were wireless only. Assume that this survey is based on sampling 15,000 households.
(a) Convert the percent to a proportion. Then use the proportion and the sample size to find the count of households who were wireless only.
(b) Find a 95% confidence interval for the proportion of households that were wireless only in June 2006.
Determine which is the dependent variable Y and which is the independent variable X. Explain your reasoning. Draw a scatterplot and indicate the relationship if any. Explain. Compute the least-squares regression equation. Show major line items of you..
According to studies, 1% of all patients who undergo laser surgery to correct their vision have serious post laser vision problems. In a sample of 95,000 patients, what is the approximate probability that fewer than 960 will experience serious..
he probability is 1 in 4000000 that a single auto trip in the united states will result in a fatality. over a lifetime
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