Reference no: EM132399768

In the following exercises: (1) state H₀  and H_A , using the correct symbols, (2) identify which hypothesis contains the claim, (3) tell whether the test is left-tailed, right-tailed, or two-tailed, and  (4) tell if you're trying to "support" or "reject" the claim.

a.  Manufacturers claim that the standard deviation is at most 0.01 ounces.

H₀: ______________________             This is a __________-tailed test.

H_A: ______________________               We're trying to ____________ claim.

b.  A researcher claims that more than 20% of U.S. children are obese.

H₀: ______________________             This is a __________-tailed test.

H_A: ______________________               We're trying to ____________ claim.

c.  It is claimed that the mean height of American adult females is 64 inches.

H₀: ______________________             This is a __________-tailed test.

H_A: ______________________               We're trying to ____________ claim.