STAT 400 Midterm: STAT400 PILACHOWSKI-T SPRING2015 0101 MID SOL 1

• School: University of Maryland
• Department: Statistics and Probability
• Course: STAT 400
• Professor: All

Document Summary

Spring 2015: (10 points) an experiment has the probability distribution given in the table below. Stat 400 exam 2 (4. 3 5. 4) A sample of size 49 is randomly selected from the population. What is the probability that the sample mean. The sample size n = 49 satisfies our rule-of-thumb criterion for invoking the central limit theorem. What is the probability that a barfly will have a weight greater than 490 g? z. Give a numeric answer rounded to 2 decimal places. 2. g: (8 points) an insurance company knows that major flooding occurs in a town on average every three years, and there is reason to believe that the probability is exponentially distributed. What is the expected time for the next two floods to occur? ( )( ) 15. What is the probability that two major floods will occur within the next 10 to 30 years? standardize.