MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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- Assume that the distribution for the following scenario is normal. Use the standard normal table to find the probability. Round z-scores to the nearest hundredth. Do not round the probability from the table. The average daily jail population in the United States is 618,319. If the distribution is normal and the standard deviation is 50,200, find the probability that on a randomly selected day, the jail population is: Between 500,000 and 600,000: (Fill in blanks) P(500,000 < x < 600,000) = P(_____ < z < ______) = ______ - _______ = _________arrow_forwardPrivate nonprofit four-year colleges charge, on average, $27,503 per year in tuition and fees. The standard deviation is $6,757. Assume the distribution is normal. Let X be the cost for a randomly selected college. Round all answers to 4 decimal places where possible. a. What is the distribution of X? X- N(0 b. Find the probability that a randomly selected Private nonprofit four-year college will cost less than 25,062 per year. c. Find the 70th percentile for this distribution. $ (Round to the nearest dollar.)arrow_forwardFind P(Z > -1.23) (Hint: We don't need to know mean and the standard deviation, since Z scores refer to "Standard Normal Distribution" ) A .4029 B .4357 C .8907 D .0505arrow_forward
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- The amount of coffee in a can has a mean of 350g. The standard deviation is 5g. Use the normal distribution curve to find the probability the coffee can will have BETWEEN 340 and 350 grams of coffee in it. 0.34, 0.34 0.135 0.0235 0.0015 0.135 X 0.0235 0.0015 335 340 345 350 355 360 365 .475 .68 .0235 O .815arrow_forwardThe amount of trash generated by US households (in lbs per day) is normally distributed. You take a sample of 10 people. The sample average is xbar=10.91 lbs, and the sample standard deviation is s=4.736. What is the 99% Conf. Int. for the mean? Group of answer choices a. 6.04 to 15.78 b. 8.33 to 13.49 c. 8.09 to 13.73 d. 7.74 to 14.08arrow_forwardLisa has collected data to find that the number of pages per book on a book shelf has a normal distribution. What is the probability that a randomly selected book has fewer than 144 pages if the mean is 186 pages and the standard deviation is 21 pages? Use the empirical rule. Enter your answer as a percent rounded to two decimal places if necessary.arrow_forward
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