Suppose you would like to conduct a survey to determine the yearly consumption of beef by a typical American and want to use 3 pounds as the desired margin of error estimate of the population mean amount of beef consumed annually. Use 25 pounds as the population standard deviation and recommend a sample size for each of the following situations: A 90% confidence interval is desired. A 95% confidence interval is desired. A 99% confidence interval is desired. When the desired margin of error is set, what happens to the sample size as the confidence level is increased? Would you recommend using 99% confidence interval in this case?

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A:

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A: xP(x)-2500.07-1000.0900.21750.311500.242750.064000.02

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A: Mean()=0.88standar deviation()=0.15

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Q: Q7. What's the Q2? Answer with TWO decimal digits. A

A: hrs1f%c.fc.%1-15504.2504.216-3026922.431926.531-4550842.282768.846-6028223.4110992.261-75615.1117097…

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Q: what is the variance?

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