MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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A random sample of n = 25 scores is obtained from a normal population with µ = 30 and σ = 6. What is the
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- A random sample of n = 9 scores is selected from a normal distribution with μ = 80 and σ = 12. What is the probability that the sample mean will be between 76 and 84? arrow_forwardthe number of times a customer uses an atm has an unknown distribution with mean = 7 and variance = 3. for a random sample of 40 customers, whats the probability of observing a sample mean between 6.4 and 6.8?arrow_forwardAbout 80% of all female heart transplant patients will survive for at least 3 years. Seventy female heart transplant patients are randomly selected. What is the probability that the sample proportion surviving for at least 3 years will be less than 75%? Assume the sampling distribution of sample proportions is a normal distribution. The mean and the sample proportion is equlal to the population proportion and the standard deviation is equal to pq/narrow_forward
- A random sample of 100 items is selected from a population of size 350. What is the probability that the sample mean will exceed 200 if the population mean is 195 and the population standard deviation equals 20?arrow_forwardFind the value of variance in the Binomial distribution where there are 5 samples and p=0.3.arrow_forwardWhat is the probability of sampling a score of X = 55 or greater from a population with μ = 50 and σ = 15?arrow_forward
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