A sample of size n = population standard deviation o = 9, compute a 99% confidence interval for the population mean µ. 1. 81 produced the sample mean of i 50. Assuming the %3D Given the following...

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Extracted text: A sample of size n = population standard deviation o = 9, compute a 99% confidence interval for the population mean µ. 1. 81 produced the sample mean of i 50. Assuming the %3D Given the following data: 2 2. 10 8 6 4 Construct a 95 % confidence interval estimate for the population mean. A random sample of 1000 people shows that 100 are left-handed. Construct a 90% confidence interval for the true proportion of left-handers. 3. How large a sample would be necessary to estimate the true proportion defective in a large population within 5%, with 99% confidence? (Assume a pilot sample yields p = 0.5) 4. %3D 5. Write a short note on point estimate and confidence interval estimate.