MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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A random variable X is
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- The time taken to complete an exam folows a normal probability distribution with a mean of 60 minutes and standard deviation of 10 minutes. What is the probability that a randomly chosen student will complete the exam in 50 minutes or longer?arrow_forwardThe typical weight of a donut that you'd buy at Bronuts Bakery is 26 grams. Suppose that x is a random variable that describes the weight of a donut bought from this bakery. It turns out that the distribution of x is a normal distribution, the mean weight is μ = 26 grams and the standard deviation is a = 3 grams. Suppose that you work as a donut delivery person and you're carrying around a giant bag of these donuts. If you were to randomly pick a single donut from the bag... (a) What is P(x 28 grams)?arrow_forwardThe manufacturer of cans of salmon that are supposed to have a net weight of 6 ounces tells you that the net weight is actually a normal random variable with a mean of 5.95 ounces and a standard deviation of 0.14 ounce. Suppose that you draw a random sample of 32 cans. Find the probability that the mean weight of the sample is less than 5.9 ounces. Probability = xxxxxxxxxxxxarrow_forward
- Assuming you obtained a random sample of blood glucose levels from 32 individuals from a population and the mean of the population is 120 and the standard deviation of the sample is 15, calculate the probability that the mean blood glucose levels for the sample population will be above 127.arrow_forwardA random variable is normally distributed with mean 84.2 and standard deviation 17.5. What value is 2 standard deviations below the mean?arrow_forwardAssume that the square footage of a residential house in the US is normally distributed with a mean=1000 and standard deviation=150 square feet. If we select a random house what is the probability that it will be at most 1050 square feet?arrow_forward
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