A survey reported that the mean starting salary for college graduates after a three-year program was $34,620Assume that the distribution of starting salaries follows the normal distribution with a standard deviation of $3390. What percentage of the graduates have starting salaries: (Round z-score computation to 2 decimal places and the final answers to 4 decimal places.) a. Between $30,000 and $38,700? Probability b. More than $43,600? Probability c. Between $38,700 and $43,600? Probability A uniform distribution is defined over the interval from 1 to 5. a. What are the values for a and b? a b b. What is the mean of this uniform distribution? (Round the final answer to 1 decimal place.) Mean c. What is the standard deviation? (Round the final answer to 4 decimal places.) Standard deviation d. Is the total area under (Click to select) v he curve equal to 1.00? e. Find the probability of a value more than 2.6. (Round the final answer to 2 decimal places.) Probability f. Find the probability of a value between 2.9 and 3.7, (Round the final answer to 4 decimal places.) Probability Assume that the mean hourly cost to operate a commercial airplane follows the normal distribution with a mean of $1740 per hour and a standard deviation of $210. What is the maximum operating cost for the lowest 5% of the airplanes? (Round z~score computation to 2 decimal places and the final answer to 1 decimal place.) Maximum operating cost $ 1393.60 Given the following pairs of zvalues, find the area under the normal curve between each pair of zvalues, Refer to the table in Agpendix B.'l. (Round the final answers to 4 decimal places.) a. z= 2.7 and 2= 2 b. z= 1.8 and z= O.5 c. 2: 1.56 and Z: 2.97 d. z= 2.31 and z= 1.39