solve for 7 and 8

The distribution of the amount paid in health claims by Red Cross Red Shield (RCRS), a medical insurance company, on individual health insurance plans for college students has mean $500, median $400, and standar deviation $550. Use this information to answer Question 7 to 10. Based on this information alone, can you determine the exact probability that the annual amount paid in claim to a single randomly chosen participant is greater than $800? P(More than $800) = 0.425 O P(More than $800) = 0.275 Since we do not know the exact distribution, we cannot determine the probability that the annual amount paid in claims to a single randomly chosen participant is greater than $800 with mean and standard deviation alone. P(More than $800) - 0.5 QUESTION 8 Instead of the annual amount paid to an individual, we are interested in the average amount paid of a sample If we select a random sample of n - 90 plan members and compute the average amount paid to the 90 plan members (i.e., X ). What is the expected value of the sample average, E [x ] ? $400 $900 $45,000