The test statistic of z = -1.96 is obtained when testing the claim that p <...

Question

Question

The test statistic of z = -1.96 is obtained when testing the claim that p < 0.88.

a. Using a significance level of a= 0.01, find the critical value(s).

b. Should we reject H0 or should we fail to reject H 0?

math Statistics-And-Probability

Answer 1

Answer #1

a)
This is left tailed test, for α = 0.01
Critical value of z is -2.33.

b)
reject H0 if z < -2.33

As test statstic does not lie in the rejection region, we fail to reject H0

Answer 2

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