The pew research center reported in 2018 that 68% of u. s. adults rated "reducing health care costs" as a national priority. this year a survey is conducted with a national sample of 1,505 u. s. adults selected by a combination of landline and cell phone random digit dials. this year's survey finds that 70% of the sample says that "reducing health care costs" is a national priority. we test the following hypotheses: h 0: the proportion of u. s. adults this year who rate "reducing health care costs" as a national priority is still 0.68. h a: the proportion of u. s. adults this year who rate "reducing health care costs" as a national priority is greater than 0.68. the p-value is 0.045. at a 5% significance level, we would reject the null hypothesis and concluded that the proportion of u. s. adults this year who rate "reducing health care costs" as a national priority is greater than 0.68. explain the p-value in the context of this issue.