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Consider a random sample of size 32 from a population with hypothesized mean 3.14 and σ = 6.8. EX9.69

a. Write the four parts for a one-sided, left-tailed hypothesis test concerning the population mean with a = 0.001.

b. What assumptions are made in order for the test in part (a) to be appropriate?

c. Compute the sample mean, and find the value of the test statistic. Draw a conclusion about the population mean.

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