Cho X là biến ngẫu nhiên rời rạc có bảng phân phối xác suất x 1 2 3 4 5 6 7
P a 2a 2a 3a a² 2a² a(7a + 1)
a. Xác định tham số a.
b. Với a tìm được, tính P(X≥4).
c. Tìm kỳ vọng và phương sai của X.

Part i a company's cereal is not selling well. create a 10-15-question survey that measures customers' preferences for the company's cereal product. then, answer the following questions: how many scale items will you put in the survey? justify your answer. will you use multiple-choice questions? why or why not? how many scale points will you use in the survey? justify your answer. what data type will be used in the survey? justify your answer. part ii as a second part of this assignment, create a set of survey questions, assuming that you sell cars. you are attempting to measure how customers perceive the quality of the cars that you sell. create three survey questions with simple category scales. justify why you selected those questions and scales. create three survey questions with multiple-choice, single-response scales. justify why you selected those questions and scales. create three survey questions with multiple-choice, multiple-response scales. justify why you selected those questions and scales. create three survey questions with likert scale summated ratings. justify why you selected those questions and scales.

Dakota products has a production budget as follows: may, 16,000 units; june, 19,000 units; and july, 24,000 units. each unit requires 3 pounds of raw material and 2 direct labor hours. dakota desires to keep an inventory of 10% of the next month’s requirements on hand. on may, 1 there were 4,800 pounds of raw material in inventory. direct labor hours required in may would be:

Your uncle borrows $53,000 from the bank at 11 percent interest over the nine-year life of the loan. use appendix d for an approximate answer but calculate your final answer using the formula and financial calculator methods. what equal annual payments must be made to discharge the loan, plus pay the bank its required rate of interest