How do I find the standardized test statistic z? How would I find it with a ti84 plus calculator.  A research center claims that at least 24% of adults in a certain country think that their taxes will...

How do I find the standardized test statistic z? How would I find it with a ti84 plus calculator.  A research center claims that at least 24% of adults in a certain country think that their taxes will be audited. In a random sample of 1100 adults in that country in a recent year, 19%say they are concerned that their taxes will be audited. At alpha = 0.10, is there enough evidence to reject the center's claim? Find the critical value(s) and identify the rejection region(s). Find the standardized test statistic z.