MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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- Suppose height of men in the US is
normally distributed withmean 70 inches and standard deviation 3 inches. Find an interval where you expect the middle 95% of sample means based on 10 randomly selected mean to fall?
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- what is the standard deviation for 12,10,15,12,20arrow_forward8. Suppose the length of the newborn babies in a community is normally distributed with an average of 50 cm and a standard deviation of 3cm. If a newborn baby's length is 95th percentile, find the length in cm.arrow_forwardHow we quantify the amount of sampling variation—e.g. the standard deviation of the distribution of sample statistics?arrow_forward
- 12. How would your approximation of the actual mean and actual standard deviation change if you would have randomly selected 10 drivers instead of 5? Explain.arrow_forwardSuppose that the quarterly sales levels among health care information systems companies are approximately normally distributed with a mean of 9 million dollars and a standard deviation of 1.4 million dollars. One health care information systems company considers a quarter a "failure" if its sales level that quarter is in the bottom 10% of all quarterly sales levels. Determine the sales level (in millions of dollars) that is the cutoff between quarters that are considered "failures" by that company and quarters that are not. Carry your intermediate computations to at least four decimal places. Round your answer to one decimal place.arrow_forwardSuppose that the quarterly sales levels among health care information systems companies are approximately normally distributed with a mean of 8 million dollars and a standard deviation of 1.3 million dollars. One health care information systems company considers a quarter a "failure" if its sales level that quarter is in the bottom 10% of all quarterly sales levels. Determine the sales level (in millions of dollars) that is the cutoff between quarters that are considered "failures" by that company and quarters that are not. Carry your intermediate computations to at least four decimal places. Round your answer to one decimal place. 00 0 million dollars X S ? Check acer Q tab esc ! 1 9. a @ 2 W →> S #m 3 X e C d $ LAS 4 C r % 5 f t > < 6 g y & JX b 7 h C n K1300arrow_forward
- can you find the mean and standard deviation?arrow_forwardImagine that for those who meditate daily, the number of minutes in meditation has mean 35 and standard deviation 10. In a group of 200 such persons, how many are expected to meditate more than 43 minutes per day?arrow_forward28. A recent study by The Fresno Bee showed that 4% of Fresnans have a commute time (the time it takes to get to work) of more than 22 minutes. If the standard deviation of commute times is 3.5 minutes, what is the mean of all commute times?arrow_forward
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