Question: a two tailed hypothesis test is being used to evaluate a treatment effect with a = .05 , if the sample data produce a z

a two tailed hypothesis test is being used to evaluate a treatment effect with a = .05 , if the sample data produce a z score of z = -2.24 what do you do about the null hypothesis? reject it or fail to reject it?

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=+f. Does it promise a benefit or solve a problem?

=+How do they reach out and tap you on the arm like a good friend about to confide a secret?

=+ Why do some seem like a personalized, individual message?