A data set lists earthquake depths. The summary statistics are n = 500, x=4.77 km, s=4.69 km. Use a 0.01 significance level to test the claim of a seismologist that these earthquakes are from a population with a mean equal to 4.00. Assume that a simple random sample has been selected. Identify the null and alternative hypotheses, test statistic, P-value, and state the final conclusion that addresses the original claim.

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Q: If A and B are independent events, P(A)=0.11, and P(B)=0.74, what is P(B|A)?

A: The given probabilities are PA=0.11,PB=0.74. The events A and B are independent.

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A: We have given the right-tailed z-test. The test statistics of z = 1.06 Significance level = 0.10

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A:

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A:

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