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Author Archives: Anonymous

For a right-tail large-sample mean test with α = 0.05, which…

For a right-tail large-sample mean test with α = 0.05, which critical value is correct?

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In a two-tail test with α = 0.10, how much alpha is in each…

In a two-tail test with α = 0.10, how much alpha is in each tail?

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Which symbol represents a population variance?

Which symbol represents a population variance?

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If α = 0.01, what confidence level does this correspond to?

If α = 0.01, what confidence level does this correspond to?

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Write the missing complementary hypothesis exactly. Use mu f…

Write the missing complementary hypothesis exactly. Use mu for mean, p for proportion, sigma for std deviation, and sigma2 for variance. Use operators: =, , =, < or >. If H0: ρ = 0.62, then H1 is:

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A proportion test has n = 80 and p = 0.08. Are the normal ap…

A proportion test has n = 80 and p = 0.08. Are the normal approximation conditions satisfied?

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For a left-tail large-sample mean test with α = 0.01, which…

For a left-tail large-sample mean test with α = 0.01, which critical value is correct?

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A right-tail test has critical value 1.645 and TS = 1.72. Wh…

A right-tail test has critical value 1.645 and TS = 1.72. What is the correct test decision?

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Find the large sample z critical value for a right-tail test…

Find the large sample z critical value for a right-tail test with α = 0.05.

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If the confidence level is 95%, what is alpha?

If the confidence level is 95%, what is alpha?

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