3. 25pts According to NelGo Inc., the mean yearly salary of Puerto Ricans living in Orlando is $35,600 with a standard deviation of $7,000. Assume it follows the normal distribution. a. What is the probability of selecting a Puerto Rican living in Orlando that wins between $30,000 and $40,000? b. What is the yearly salary that 80% of Puerto Ricans living in Orlando exceed?Select the true statement(s). The confidence interval for / based on a / distribution is valid for any underlying distribution. V Every t distribution has more variability than does the _ distribution. Every t distribution is symmetric and centered at 0. The confidence interval for / based on a t distribution is used only for sample sizes less than or equal to 30