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Sagot :
Since, Z(0)>Z(0.1) that is 3.07>1.28. So reject H(0). So the option 1 and 3 is correct.
In the given question,
H(0): μ=18 ; H(a): μ>18
x = 19.1
Conclude whether to reject or not reject H(0), and interpret the results.
σ = 1.6
α = 0.1 (significance level) .
The test statistic is
Z(0) = {x-μ(0)}/(σ/√n)
Z(0)= (19.1-18)/16/√20
Z(0) = 3.07
The critical value is Z(0.1) = 1.28.
As we can see that;
Z(0)>Z(0.1) that is
3.07>1.28
So reject H(0).
So the option 1 and 3 is correct.
Reject H(0), the test statistic Z(0)=3.07 is Z(0)=3.07 is greater than the critical value Z(α)=1.28, for a right-tailed test therefore there is NOT enough evidence to reject H(0) that the mean number of likes is not equal to 18 mg per generic anti-histamine dose.
And
The test statistic falls within the rejection region.
To learn more about test statistic link is here
brainly.com/question/29657390
#SPJ4
The right question is:
Select two responses below.
Select all that apply:
(1) Reject H(0). The test statistic Z(0)=3.07 is greater than the critical value Z(α)=1.28, for a right-tailed test therefore there is NOT enough evidence to reject H(0) that the mean number of likes is not equal to 18 mg per generic anti-histamine dose.
(2) Fail to reject H(0). The test statistic Z(0)=3.07 is greater than the critical value Z(α)=1.28, for a right-tailed test therefore there is NOT enough evidence to reject H(0) that the mean number of likes is not equal to 18 mg per generic anti-histamine dose.
(3) The test statistic falls within the rejection region.
(4) The test statistics is NOT in the rejection region.

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