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A southern state has an unemployment rate of 6%. The state conducts monthly surveys in order to track the unemployment rate. In a recent month, a random sample of 700 people showed that 35 were unemployed.
a) If the true unemployment rate is 6%, describe the sampling distribution of p^.
b) Find P(p^ >= 0.05)
c) Assume the population proposal, p, is unknown. Describe the sampling distribution of p^ based on the most recent sample.
d) Find the probability that the sample proportion will lie within 0.05 of the true proportion of people who are unemployed.
Evaluate 2-month moving average and Exponential smoothing by MAD.
Assume that x has a normal distribution, with the specified mean and standard deviation. Find the indicated probabilities.
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Maria Gomez, a research analyst in the state department of health, has undertaken a study of the possible consequences of overbuilding hospital facilities.
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Research question : At α = . 05, is cockpit noise level independent of flight phase?
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