Question

A medical researcher says that less than 79% of adults in a certain country think that healthy children should be required to be vaccinated in a random sample of 500 adults in that country, 76% think that healthy children should be required to be vaccinated. At a=0.10, is there enough evidence to support the researcher's claim? Complete parts (a) through (e) below (a) Identity the claim and state Hy and H Identify the claim in this scenario Select the correct choice below and fill in the answer box to complete your choice Type an integer or a decimal Do not round) A Less than % of adults in the country think that healthy children should be required to be vaccinated OB % of adults in the country think that healthy children should be required to be vaccinated OC More than % of adults in the country think that healthy children should be required to be vaccinated OD. The percentage of adults in the country who think that healthy children should be required to be vaccinated is not

Answer 1

Ans: Ho: p= 0.79 VB Hai P<0.79 n = 500, p = 0.76 Critical value (zo) =(-1.28) Left tailed test the region 85 ZC -1.28 refection P-P 9 1-1.65 0.76-0.79 2 = Pli-D) 0.7980.21 Soo n Snee Zgjat < -2c Refect the null hypothesis. There as enough endence to support the researcher's clain.