Proctor & Gamble claims that at least half the bars of Ivory soap they produce are 99.44% pure (or more pure) as advertised. Unilever, one of Proctor & Gamble's competitors, wishes to put this claim to the test. They sample the purity of 140 bars of Ivory soap. They find that 70 of them meet the 99.44% purity advertised. What type of test should be run? O z-test of a proportion O t-test of a mean The alternative hypothesis indicates a O right-tailed test O left-tailed test O two-tailed test Calculate the p-value Does Unilever have sufficient evidence to reject Proctor & Gamble's claim? O No O Yes