Laboratory test shows that the lives of lightbulbs are normally distributed with a mean of 750 hours in a standard deviation of 75 hours. Find the probability that a randomly selected light bulb last between 825 and 900 hours

Amayoral candidate would like to know her residents’ views on a tax on sugar drinks before the mayoral debates. she asks one thousand registered voters from both parties. these voters are an example of a census population convenience sample simple random sample