If a worker at this fast food restaurant is selected at random, what is the probability that the worker earns more than $6.75? A) 27.64% B) 5.17% C) 28.77% D) 42.07%. 14. The average diameter of sand dollars on a certain island is 3.00 centimeters with a standard deviation of 0.70 centimeters.If 9 sand dollars are chosen at random for a collection, find the probability that the average diameter of those sand dollars is more than 2.790 centimeters.Assume that the variable is normally distributed. A) 0.8019 B) 0.8131 C) 0.7959 D) 0.8159. 15.. The average number of mosquitoes in a stagnant pond is 80 per square meter with a standard deviation of 8. If 16 square meters are chosen at random for a mosquito count, find the probability that the average of those counts is more than 81.6 mosquitoes per square meter.
Viruses or bacteria infect the larynx, or voice box, and cause it to. swell. That produces irritation and soreness, and changes the voice, making you sound hoarse and unable to speak above a whisper, or even. causing you to lose your voice entirely for a few days. Often, the virus. comes from another ailment, such as a cold, the flu, or bronchitis.
Smoking is the primary cause of chronic obstructive pulmonary disease -- or COPD -- which is a condition that includes both chronic bronchitis and emphysema. Smoking makes symptoms worse in people who already have asthma, and it may actually cause the onset of asthma in some adolescents and adults.