Question

A researcher is testing a hypothesis of a single mean. The
critical *z* value for = .05 and a one-tailed test is 1.645.
The observed *z* value from sample data is 1.13. The
decision made by the researcher based on this information is to
______ the null hypothesis.

Answer #1

**The decision made by the researcher based on this
information is to accept
(fail to reject) the null hypothesis.**

[*explanation*:-

test statistic :-

the critical value of z at alpha=0.05 is:-

the positive critical value indicates that it is a right tailed test .

decision:-

so, we * fail to reject the null
hypothesis*.]

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Question #3
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Question #4
A researcher evaluates a treatment effect using a two tailed
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The negative critical value for a two-tailed hypothesis testing
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t0.025,10= -2.228; B.
Z0.025 = -1.96; B.
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t0.05,10 = - 2.10

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