The test statistic of zequalsnegative 2.44 is obtained when testing the claim that pequals2 divided by 3. a. using a significance level of alphaequals0.10, find the critical value(s). b. should we reject upper h 0 or should we fail to reject upper h 0?

Step-by-step explanation:

Given that The test statistic of zequalsnegative 2.44 is obtained when testing the claim that pequals2 divided by 3

Hypothesis is

H0:p = 2/3

Ha:p not equals 2/3

(Two tailed test for proportions)

Alpha =0.10

For 90% confidence level Z critical = ±1.645

Test statistic = -2.44

This lies outside (-1.645, 1.645)

Hence reject null hypothesis

b) We should reject null hypothesis.

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