Question: please do 4 and 5 a 4. Please calculate a confidence interval for the percent of your customers you expect to go unsatisfied. You surveyed

please do 4 and 5

a 4. Please calculate a confidence interval for the percent of your customers you expect to go unsatisfied. You surveyed 76 customers and found that 23% of them were unsatisfied. You wish to be 98% confident when stating this interval range. The population of customer data is 600 surveys. Round your answers to the thousandth place. Hint: FPCF? 5. Suppose you are trying to estimate the population mean for your company's production. You have sampled 49 months and you calculated the average production (sample mean), in dollars, to be $900,000, with a standard deviation of $42,000. Note that this standard deviation is of raw data. Your company has population monthly production data for 950 months (quite a long time). Please calculate a confidence interval for your sample mean, assuming you wish to be 96% confident. -4

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