Example A certain type of magnetic disk must function in an environment where it is
exposed to corrosive gases. It is known that 10% of all such disks have
lifetimes less than or equal to 100 hours, 50% have lifetimes greater than 100
hours but less than or equal to 500 hours and 40% have lifetimes greater than
500 hours. Let Z represent the number of hours in the lifetimes of a randomly
chosen disk
a) Find P(Z<=500)

Anurse is providing teaching to a client who has a gastric ulcer and a new prescription for ranitidine. which of the following statements by the client indicates an understanding of the teaching? a. “i can take two aspirin to treat headaches.” b. “i should avoid dairy products when taking this medication.” c. “i can expect fine hand tremors when taking this medication.” d. “i should not take an antacid within 1 hour of taking this medication.”

Which of the following positions is used during the immediate postoperative recovery of pediatric tonsillectomy patients? a. supine, with head extended up b. lateral, with a slight head-down tilt c. supine, with head turned to the side d. trendelenburg, with head turned to the side

Which of the tollwing essential glands in the neck may be compromised during a thyroidectomy? a. thymus b. pituitary c. parotid d. parathyroid