A test fails to reject H0:p=.40. Best statement?

95% CI for p=(.48,.56). Is p=.60 plausible at corresponding 5% two-sided level?

x-bar=40, margin of error=2.5. CI?

P-value=.12, alpha=.10. Decision?

P(A)=0.28. Find P(not A).

n=9, x-bar=22, s=6, H0:mu=20. Find t.

Claim: proportion differs from .30. Choose H1.

Fail to reject H0:mu=75 against H1:mu>75. Best conclusion?

n=16, x-bar=104, s=8, H0:mu=100. Find t.

Which generally makes a CI narrower?