In a recent study on world happiness, participants were asked to evaluate their current lives on a scale from 0 to 10, where 0 represents the worst possible life and 10 represents the best possible life. The responsos were normally distributed, with a mean of 4.8 and a standard deviation of 2.2. Answer parts (a) (d) below. (a) Find the probability that a randomly selected study participant's response was less than 4. The probability that a randomly selected study participant's response was less than 4 is (Round to four decimal places as needed.) Enter your answer in the answer box and then click Check Answer. Chock Answer Clear All 3 parts remaining 2:06 AM 2/27/2021 hero to cearch

In a recent study on world happiness, participants were asked to evaluate their current lives on a scale from 0 to 10, where 0 represents the worst possible life and 10 represents the best possible life. The responsos were normally distributed, with a mean of 4.8 and a standard deviation of 2.2. Answer parts (a) (d) below. (a) Find the probability that a randomly selected study participant's response was less than 4. The probability that a randomly selected study participant's response was less than 4 is (Round to four decimal places as needed.) Enter your answer in the answer box and then click Check Answer. Chock Answer Clear All 3 parts remaining 2:06 AM 2/27/2021 hero to cearch

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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In a survey of a group of men, the heights in the 20-29 age group were normally distributed, with a mean of 69.1 inches and a standard deviation of 2.0 inches. A study participant is randomly selected. Complete parts (a) through (d) below. ... (a) Find the probability that a study participant has a height that is less than 65 inches. The probability that the study participant selected at random is less than 65 inches tall is 0.0202. (Round to four decimal places as needed.) (b) Find the probability that a study participant has a height that is between 65 and 71 inches. The probability that the study participant selected at random is between 65 and 71 inches tall is 0.8088. (Round to four decimal places as needed.) (c) Find the probability that a study participant has a height that is more than 71 inches. The probability that the study participant selected at random is more than 71 inches tall is (Round to four decimal places as needed.) .
Suppose that the number of points scored in a game comes from a normal population with an average of 12 points and a standard deviation of 9 points. Estimate the chance that the average points scored in ten randomly selected games will exceed 14.2 points. A. 0.4034 B. 0.0073 C. 0.2198 D. 0.2297
In a recent year, 11th grade New York public school students taking an English test produced test scores that were normally distributed with a mean of 84 and a standard deviation of 7.2. Let x be a random variable that represents a test score. What is the lowest score that would still place a student in the top 30% of the scores? A. 85.82 B. 87.78 C. 82.52 D. 79.47
Researchers investigated the effects of being distracted by a game on how much people eat. The 22 patients in the treatment group who ate their lunch while playing solitaire were asked to do a serial-order recall of the food lunch items they ate. The average number of items recalled by the patients in this group was 4.9, with a standard deviation of 1.9. The average number of items recalled by the patients in the control group (no distraction) was 6.2, with a standard deviation of 1.9. Do these data provide strong evidence that the average number of food items recalled by the patients in the treatment and control groups are different? (Use a significance level of 0.05. Use µ- - Hc) State the appropriate null and alternative hypotheses. O Ho: Hy> HC HA: HT SHC HA: HT< Mc O Ho: HT = HC HA: HT HC %3D O Ho: Hp# HC HA: HT = HC Ho: HT = HC HA: HT< HC Calculate the test statistic. (Round your answer to two decimal places.) t =
Women's shoe sizes are (approximately) normally distributed, with an average size of 8.076 and a standard deviation of 1.468. You work at Vogue Magazine, and would like to interview some women about how shoes fit. You take a random sample of 10 women. What is the probability that the 10 women you sampled had an average shoe size that is greater than 8?
Women's shoe sizes are (approximately) normally distributed, with an average size of 8.076 and a standard deviation of 1.468. You work at Vogue Magazine, and would like to interview some women about how shoes fit. You take a random sample of 10 women. What is the probability that the 10 women you sampled had an average shoe size that is less than 8?
In a survey of a group of men, the heights in the 20-29 age group were normally distributed, with a mean of 67.2 inches and a standard deviation of 3.0 inches. A study participant is randomly selected. Complete parts (a) through (d) below. (a) Find the probability that a study participant has a height that is less than 66 inches. The probability that the study participant selected at random less than 66 inches tall is. (Round to four decimal places as needed.) (b) Find the probability that a study participant has a height that is between 66 and 70 inches. The probability that the study participant selected at random is between 66 and 70 inches tall is (c) Find the probability that a study participant has a height that is more than 70 inches. The probability that the study participant selected at random is more than 70 inches tall is (d) Identify any unusual events. Explain your reasoning. Choose the correct answer below. F F2 80 F3 OA. There are no unusual events because all the…
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Women's shoe sizes are (approximately) normally distributed, with an average size of 8.076 and a standard deviation of 1.468. You work at Vogue Magazine, and would like to interview some women about how shoes fit. You take a random sample of 10 women. What is the probability that the 10 women you sampled had an average shoe size that is greater than 8.5?