MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Suppose the number of items you can deliver in a day is a random variable with some unknown distribution with a
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- A random sample of n=16 scores is obtained from a population with a standard deviation of 16. If the sample mean is greater than 8 points greater than the population mean, what is the z-score for the sample mean?arrow_forwardif one score is randomly selected from a normal distribution with a population mean of 22 and a standard deviation of 16, what is the probability of obtaining a score between X=30 and X=22?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
- A particular fruit's weights are normally distributed, with a mean of 483 grams and a standard deviation of 23 grams.If you pick 17 fruits at random, then 16% of the time, their mean weight will be greater than how many gramsarrow_forwardWhat is the probability that 46 cars chosen at random will have a mean load weight x of less than 85.5 tons of coal if the mean is 86 and standard deviation 1.4arrow_forwardIf the random variable of X is normally distributed with a mean of 50 and a standard deviation of 10, approximately what % of all possible observed values of X will lie between 30 and 70.arrow_forward
- A particular fruit's weights are normally distributed, with a mean of 636 grams and a standard deviation of 18 grams.If you pick 21 fruits at random, then 15% of the time, their mean weight will be greater than how many grams?arrow_forwardSuppose the number of items you can deliver in a day is a random variable with some unknown distribution with a mean = 35 and a standard deviation of 8. 95.25% of all sample means of 36 days will be greater than ?.arrow_forwardThe personality variable extraversion is normally distributed in the population and has a mean of 10 and a standard deviation of 2. Researchers consider individuals who are 1 standard deviation above the mean “highly” extroverted. What is the probability that you can randomly sample 3 people from the population and all 3 would be “highly” extroverted?arrow_forward
- Suppose the number of items you can deliver in a day is a random variable with some unknown distribution with a mean of 35 and a standard deviation of 8. 95.25% of all sample means of 36 days will be greater than?arrow_forwardIf a population forms a normal shaped distribution with µ =40 and σ = 8 and a sample of 16 scores from this population has a mean of 36, would this sample be relatively typical or extreme?arrow_forward
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