The population mean annual salary for environmental compliance specialists is about $62,500. a random sample of 41 specialists is drawn from this population. what is the probability that the mean salary of the sample is less than $60,000? assume o = $6,400

If the value of cos330°is√3/2 then find cos 165°.

Jocelyn estimates that a piece of wood measures 5.5 cm. if it actually measures 5.62 cm, what is the percent error of jocelyn’s estimate? a. 2.13% b. 2.18% c. 12%

Among the most famous of all meteor showers are the perseids, which occur each year in early august. in some areas the frequency of visible perseids can be as high as 40 per hour. given that such sightings are poisson events, calculate the probability that an observer who has just seen a meteor will have to wait at least five minutes before seeing another.