Given a normal distribution with u = 101 and a= 15, and given you select a sample of n=9, complete parts (a) through (d).Click here to view page 1 of the cumulative standardized normal distribution table.Click here to view pag0.2 of the cumulative standardized normal distribution table.a. What is the probability that X is less than 90?

Let X be the random variable from Normal distribution with mean (μ) = 101, standard deviation (σ) =…

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A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Provide an appropriate response. Use the Standard Normal Table to find the probability. The distribution of cholesterol levels in teenage boys is approximately normal with μ = 170 and o= 30. Levels above 200 warrant attention. What percent of teenage boys have levels above 225? O A. 6.06% O B. 46.64% O C. 56.13% O D. 3.36% C
A lawyer commutes daily from his suburban home to his midtown office. The average time for a one-way trip is 24 minutes, with a standard deviation of 3.4 minutes. Assume the distribution of trip times to be normally distributed. Complete parts (a) through (e) below. Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table. 1 hour? (a) What is the probability that a trip will take at least (Round to four decimal places as needed.)
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Use the tabulated cumulative normal distribution (Table A.2 or the inside cover of Navidi) to find the missing value in the probability distribution plots shown below. The numbers below the curve are the relevant values of X, and the numbers above the curve represent the shaded area. a. b. 1 0.4 0.3 0.2 0.1- 00 0.4 0.3 0.2 0.1- 0.0 04 0.3 0.2 0.1- 0.0 ??? Distribution Plot Normal, Mean=0, StDev=1 -1.175 0 X Distribution Plot Normal, Mean=0, StDev=1 0 X Distribution Plot Normal, Mean=0, StDev=1 0 ??? 1 ??? 0.025
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Researchers at a reputable university and a reputable health organization claim that approximately 77% of people believe "tranquilizers work very well to make a person more calm and relaxed." Of the next 80 people interviewed, what is the probability that (a) at least 52 are of this opinion? (b) at most 58 are of this opinion? Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table. (a) The probability is (Round to four decimal places as needed.) (b) The probability is (Round to four decimal places as needed.)
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Lightbulbs: The lifetime of lightbulbs has a mean of 1500 hours and a standard deviation of 100 hours. A sample of 100 lightbulbs is tested. Use the Cumulative Normal Distribution Table or technology. Round your answers to four decimal places.What is the probability that the sample mean lifetime is less than 1540 hours? The probability that the sample mean lifetime is less than 1540 hours is
A random variable follows the normal probability distribution with a mean of 100 and a standard deviation of 10. Determine the probability for a randomly selected value from this population in parts a through d below. Click here to view page 1 of the standard normal probability table. Click here to view page 2 of the standard normal probability table. Question content area bottom Part 1 a. What is the probability that the value is less than 90? The probability that the value is less than 90 is enter your response here. Part 2 b. What is the probability that the value is less than 85? The probability that the value is less than 85 is (Round to four decimal places as needed.) Part 3 c. What is the probability that the value is more than 130? The probability that the value is more than 130 is enter your response here. Part 4 d. What is the probability that the value is more than 75? The probability that the value is more than 75 is (Round to four decimal…
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A pair of dice is rolled 210 times. What is the probability that a total of 7 occurs (a) at least 24 times? (b) between 38 and 48 times inclusive? (c) exactly 35 times? Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table.
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Click here to view page 1 of the cumulative standardized normal distribution table. Click here to view page 2 of the cumulative stansdardized normai distribution table. a. What is the probability that X is less than 907?