A company manufactures a new type of LED light bulb. The lifespans of these light bulbs, in hours, are a continuous random variable with probability density function f(x)=0.0008−0.00000032(x−14000) from 14,000 to 16,500 hours. Use Excel to find the probability that a randomly selected LED light bulb will have a life span between 15,500 and 15,800 hours. Use an interval width of 10.

At which value in the domain does f(x) =0?

Complete the steps to find 4.830 ÷ 5

For a science project, a high school research team conducted a survey of local air temperatures. based on the results of the survey, the found that the average temperatures were around 10 degrees higher than expected. this result was wrong. the trouble with the survey was that most of the locations were exposed to direct sunlight and located over asphalt or sand, which resulted in higher temperatures than normal. this is a classic example of an error in which phase of inferential statistics?