The average height of 2-year-old children is 34 inches with a population standard deviation of = 1.75. A random sample mean of 35 2-year-olds in a large daycare franchise is collected and found to be 29.50 inches. Researchers are suspicious that the children at the daycares are not growing as quickly as they should be. (a) Calculate the test statistic for the problem. (Round your answer to two decimal places.) z = (b) Calculate the P-value. (Use a table or technology. Round your answer to four decimal places.)