The researcher's null hypotheses is H0: σ2 = 420. A sample of n = 18 items yields a sample variance of s2 = 512. The test statistic is:
A) 34.09
B) 20.72
C) 14.77
D) must know α to answer.
Correct Answer:
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Q121: The researcher's null hypothesis is H0: σ2
Q122: In a statistical test we:
A)try to reject
Q123: The researcher's null hypotheses is H0: σ2
Q124: The critical value in a hypothesis test:
A)is
Q125: The decision rule is:
A)based on the sampling
Q127: If n = 25 and α =
Q128: In hypothesis testing, the value of β
Q129: In testing the hypotheses H0: π ≤
Q130: A two-tailed hypothesis test:
A)would not be used
Q131: Regarding the probability of Type I error
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