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MNO2502-25-S2
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A sample of 25 students had a mean score of 72 with sample standard deviation 10. Test H₀: μ = 75 vs H₁: μ ≠ 75 at α = 0.05. Which is correct?
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The probability of making a Type II error is denoted by:
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If p-value = 0.03 and α = 0.05, we should:
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A manufacturer claims the mean weight of chocolate bars is 50g. A sample of 36 bars gives a mean of 49g and σ = 3g. Test at the 5% significance level. Which is correct?
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The null hypothesis (H₀) is best described as:
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Which of the following is not a step in hypothesis testing?
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A sample of 64 lightbulbs has mean life of 400 hrs. The population σ = 32 hrs. Test H₀: μ = 390 vs H₁: μ ≠ 390 at α = 0.05. Which is correct?
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Which of the following is a Type I error?
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If a company claims the average lifetime of its batteries is 500 hours, which is the correct null hypothesis?
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Which of the following is the test statistic formula when σ is known?
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