In a random sample of 100 audited estate tax returns. it was determined that the mean amount of additional tax owed was $3411 with a standard deviation of $2554 Construct and interpret a 90% condence interval for the mean additional amount of tax owed for estate tax returns. 5' Click the icon to View the t-distribution table. The lower bound is 55 [Round to the nearest dollar as needed ) The upper bound is 51: .(Round to the nearest dollar as needed.) Interpret a 90% condence interval for the mean additional amount of tax owed for estate tax returns. Choose the correct answer below. [:1 A. One can be 90% condent that the mean additional tax owed is less than the lower bound. [:1 B. One can be 90% condent that the mean additional tax owed is between the lower and upper bounds. [:1 C. One can be 90% condent that the mean additional tax owed is greater than the upper bound Suppose a simple random sample of size n = 12 is obtained from a population with u = 63 and o = 19. (a) What must be true regarding the distribution of the population in order to use the normal model to compute probabilities regarding the sample mean? Assuming the normal model can be used, describe the sampling distribution x. (b) Assuming the normal model can be used, determine P(x