A job placement director claims that the average starting salary for nurses in her city is $24,000. A sample of ten nurses' salaries in that city has a mean of $23,400 and a standard deviation of $400. Assuming that the population is normally distributed, test the claim using a = 0.05. O There is enough evidence to reject the null hypothesis. The claim is true. There is enough evidence to reject the null hypothesis. The claim is false. O There is not enough evidence to reject the null hypothesis. The claim is probably true. O There is not enough evidence to reject the null hypothesis. The claim is probably false