# Question

Four airplanes from different airlines have crashed in the past two weeks. This terrifies Bubbles, who must travel on a plane. Her travel agent claims that the probability of a plane crash is minuscule. Who is correctly interpreting the situation? Why?

## Answer to relevant Questions

(a) Why does random sampling produce representative samples? (b) Why does random sampling produce unrepresentative samples? The mean of a population of raw scores is 28 (σx = 9).Your X is 34 (with N = 35) .Using the .05 criterion with the region of rejection in both tails of the sampling distribution, should you consider the sample to be ...When we compute the z-score of a sample mean, (a) What must you compute first? (b) What is its formula? (c) What is the formula for the z-score of a sample mean? (d) It describes the mean’s location among other means on ...(a) What are the advantage and disadvantage of two-tailed tests? (b) What are the advantage and disadvantage of one-tailed tests? Bubbles reads that in study A the zobt = +1.97, p < .05. She also reads that in study B the zobt = +14.21, p < .0001. (a) She concludes that the results of study B are way beyond the critical value used in study A, falling ...Post your question

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