4. In 2016 it was estimated 23.8% of households were wireless-only, which means the household only uses cell phones and
has no landline. A recent survey of 1028 households found 324 are wireless-only.
(a) Do these data provide good evidence at the 5% significance level the percent of wireless-only households has increased?
(b) Explain the meaning of the P-value in the context of the data.