If alpha = .05 (one-tailed test, upper tail critical), what is the decision for

Question

If alpha = .05 (one-tailed test, upper tail critical), what is the decision for z_obt = -3.30? Reject the null hypothesis Fail to reject the null hypothesis (retain the null hypothesis) The critical boundaries for a hypothesis test are z = +1.96 and -1.96. If the z-score for the sample data is z = -1.90, then what is the correct statisical decision? Fail to reject H_1 Fail to reject H_0 Reject H_1 Reject H_0 If alpha = .05 (one-tailed test, upper tail critical), what is the decision for z_obt = 1.70? Reject the null hypothesis Fail to reject the null hypothesis (retain the null hypothesis)

Explanation / Answer

16)for one tailed test at 0.05 level, critical value of z=1.6449

as critical value is greater then test stat zobtailed. we fail to reject the null hypothesis

17)fail to reject Ho : as test stat falls b/w critical values

18)for z critical =1.64485

hence reject the null hypothesis

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