18.

The Alvin Secretarial Service procures temporary office personnel for major corporations. They have found that 40 % of their invoices are paid within ten working days. A random sample of 16 invoices is checked. What is the probability that at least 3 of the invoices will be paid within ten working days? Round your answer to four decimal places. AnswerHow to enter your answer (opens in new window) 5 Points Tables Keypad Keyboard Shortcuts Normal Table - to -z Prev Next Normal Table - to z 54 F O Search w 5:09 PM 4 Sunny 11/20/2022Suppose that at a large university 30 % of students are involved in intramural sports. If we randomly select 20 students from this university, what is the probability that more than 5 of these students are involved in intramural sports? Answer 5 Points Tables Keypad Keyboard Shortcuts 0.4164 Prev Next O 0.7625 0.5836 54 F 5:09 PM O Search Sunny w 4 11/20/2022Find the area under the standard normal curve to the right of z = 1.28. Round your answer to four decimal places, if necessary. Answer 5 Points Tables Keypad Keyboard Shortcuts Prev NextClassify the following as either a discrete random variable or a continuous random variable. The weights of 89 newborn babies at a local hospital. Answer 3 Points Tables Keypad Keyboard Shortcuts O Discrete O Continuous Prev Next 54 F O Search w 5:09 PM 4 Sunny 11/20/2022