For a null hypothesis, H₀: µ = 4,000, if the 1% level of significance is used and the z-test statistic is +6.00, what is our decision regarding the null hypothesis? A) Do not reject H₀. B) Reject H₀. C) Reject H₁.

Question

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Since the z-test statistic is +6.00 and the level of significance is 1%, we can find the corresponding p-value using a standard normal distribution table or calculator. The p-value is extremely small, almost 0. This means that the probability of obtaining a z-score of +6.00 or higher if the null hypothesis were true is very unlikely. As a result, we can reject the null hypothesis at the 1% level of significance and conclude that the true population mean µ is not 4,000. Hence, choice B (Reject H₀) is the correct answer.

For a Null Hypothesis, H0: µ = 4,000, If the 1

For a Null Hypothesis, H₀: µ = 4,000, If the 1