An emergency fund is defined as a savings account that has a balance equal to at least two months' living expenses. An article in a financial magazine claims that 80% of American adults do not have an emergency fund. To investigate this daim, a financial advisor selects a random sample of 150 Americans and finds that 112 do not have an emergency fund. The financial advisor would like to know if the data provide convincing evidence that the true proportion of American adults who do not have an emergency fund is less than 80%. The conditions for inference are met. What is the value of the test statistic and A value for this test?
02=-1.62,P-value = 0.0526
0 z= -1.62, P-value = 0.1052
02=1.62,P-value = 0.0526
0 z= 1.62, A value = 0.1052