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.
Q: Why do I lose my voice all the time? A: There are many reasons for losing your voice, but one of the most common reasons for chronic voice problems is due to acid reflux. This is not your typical gastro-esophageal reflux (GRED) in that you donât have to have any heartburn or indigestion. The only thing you may feel is hoarseness, but more often than not, youâll also have chronic post-nasal drip, throat clearing, cough, a lump sensation, difficulty swallowing, or pain. This is called laryngo-pharyngeal reflux disease, or LPRD. Initially, try eating dinner much earlier, and avoid alcohol close to bedtime.