Question: Suppose x has a mount-shaped distribution with = 9. A random sample of size 36 has sample mean 20. a) Is it appropriate to use

Suppose x has a mount-shaped distribution with = 9. A random sample of size 36 has sample mean 20. a) Is it appropriate to use a normal distribution to compute a confidence interval for the population mean ? Explain. ___________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ b) Find a 95% confidence interval for . c) Explain the meaning of the confidence interval you computed

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