A security expert claims that at most 20% of all homeowners have a home security alarm. State Upper H 0 and Upper H Subscript a in words and in symbols. Then determine whether the hypothesis test for this claim is left-tailed, right-tailed, or two-tailed. Explain your reasoning. State the null hypothesis in words and in symbols. Choose the correct answer below.

A.

The null hypothesis expressed in words is, "the proportion of all homeowners who own a home security alarm

is 0.20." The null hypothesis is expressed symbolically as, "Upper H 0: p= 0.20."

B.

The null hypothesis expressed in words is, "the proportion of all homeowners who own a home security alarm

is at most 0.20." The null hypothesis is expressed symbolically as, "Upper H 0: p < or = 0.20."

C.

The null hypothesis expressed in words is, "the proportion of all homeowners who own a home security alarm

is not 0.20."

The null hypothesis is expressed symbolically as, "Upper H 0: p not = 0.20."

D.

The null hypothesis expressed in words is, "the proportion of all homeowners who own a home security alarm

is at least 0.20." The null hypothesis is expressed symbolically as, "Upper H 0: p > or = 0.20."