Mathematics, 19.07.2019 16:30 tybtookie
Acertain brand of flood lamps has a lifetime that is normally distributed with a mean of 3,750 hours and a standard deviation of 300 hours. sketch a. what is the probability that a lamp will last for more than 4,000 hours? b. what is the probability that a lamp will last less than 3,000 hours? c. what lifetime should the manufacturer advertise for these lamps in order that only 4% of the lamps will burn out before the advertised lifetime?
Answers: 1
Mathematics, 21.06.2019 20:00, faithyholcomb
Someone answer asap for ! max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a. the median of max’s data is 250 b. more than half of the data points max recorded were 177 centimeters. c. a data point chosen at random is as likely to be above the mean as it is to be below the mean. d. every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.
Answers: 1
Acertain brand of flood lamps has a lifetime that is normally distributed with a mean of 3,750 hours...
Biology, 21.11.2019 18:31