Help plz I really need help lol
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Mathematics, 21.06.2019 22:10, carsondelane13
Monitors manufactured by tsi electronics have life spans that have a normal distribution with a standard deviation of 1800 hours and a mean life span of 20,000 hours. if a monitor is selected at random, find the probability that the life span of the monitor will be more than 17,659 hours. round your answer to four decimal places.
Answers: 2
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Mathematics, 22.06.2019 03:40, calibaby1220
Assume that females have pulse rates that are normally distributed with a mean of mu equals 72.0 beats per minute and a standard deviation of sigma equals 12.5 beats per minute. complete parts (a) through (c) below. a. if 1 adult female is randomly selected, find the probability that her pulse rate is between 65 beats per minute and 79 beats per minute. the probability is? b. if 16 adult females are randomly selected, find the probability that they have pulse rates with a mean between 65 beats per minute and 79 beats per minute. the probability is? c. why can the normal distribution be used in part (b), even though the sample size does not exceed 30?
Answers: 3
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Mathematics, 22.06.2019 06:00, xelynncaldera
What is 2/3 - 1/3[tex] \frac{2}{3 } - \frac{1}{3} [/tex]
Answers: 2
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Mathematics, 22.06.2019 06:30, alexishenning
Kari plans to sample 20 people of a population that contains 100 students. she wants to determine how many people wake up before 6 a. m. which sample is the most random?
Answers: 2
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