Reference no: EM132399768
In the following exercises: (1) state H0 and HA , 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.
HA: ______________________ 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.
HA: ______________________ 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.
HA: ______________________ We're trying to ____________ claim.