The National Center for Education Statistics reports that the proportion of college freshmen who return to the same school for their sophomore year is 0.7. Suppose we select a random sample of 480 freshmen from across the nation. Question 1. What is the expected value of the sampling distribution model for the proportion of 480 freshmen that will return to the same school for their sophomore year?

(a) the volume of the cone is 20/3 in3

hence, option a is correct.

total amount to be paid = $19.5

step-by-step explanation:

given ,

original price = $25.99

discount = 25%

discount amount = 25% of original price

discount amount = 25/100   * 25.99

discount amount = $6.49

hence , the total amount to be paid = original price - discount amount

                                                            = $25.99 - $6.49

                                                            =$19.5

total amount to be paid = $19.5