3. Forty percent of chocolates are black chocolates. Let Y denotes the number of black chocolatesamong ten randomly selected chocolates. Find the probability that Y is a) exactly 5; b) more than 8; c) atmost 8.How to build a confidence interval of the population mean using a large sample size?4. New devices manufactured by a company, are designed to have a lifetime of 27000 hours. Tests with30 devices show a sample mean of 26350 hours and a sample standard deviation of 920 hours. At a 0.05level of significance, perform a hypotheses testing to check the claim.

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Answered: 3. Forty percent of chocolates are…

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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The accompanying table describes results from groups of 8 births from 8 different sets of parents. The random variable x represents the number of girls among 8 children. Complete parts (a) through (d) below. E Click the icon to view the table. a. Find the probability of getting exactly 6 girls in 8 births. (Type an integer or a decimal. Do not round.) b. Find the probability of getting 6 or more girls in 8 births. (Type an integer or a decimal. Do not round.) c. Which probability is relevant for determining whether 6 is a significantly high number of girls in 8 births: the result from part (a) or part (b)? O A. The result from part b, since it is the probability of the given or more extreme result. O B. The result from part a, since it less than the probability of the given or more extreme result. O C. The result from part b, since it is the complement of the result of part a. O D. The result from part a, since it is the exact probability being asked. d. Is 6 a significantly high…
Q1: Fourteen concrete columns had been poured and the length of the columns were (in cm): 99, 98, 96, 92, 89, 112, 107, 106, 104, 102, 101, 99, 101, 94 a. Find frequency table. b. Draw histogram and polygon. Draw cumulative frequency. d. Find the probability of a column length less than 98.5 cm. e. Find the probability of a column length equal to 93 cm. с.
Given N(23.4, 6.2), the probability that X is less than 23.4, is: 0.25 0.75 0.67 0.5
The mean number of boxes shirts purchased from a souvenir store per week is 5. Find the probability that in a week there are three or more boxes of shirts sold. a. 0.543 b. 0.491 c. 0.549 d. 0.351
Please answer the question with details on how to do it. Thank you. 4. A single ball is drawn at random from a box containing 12 orange balls, 10 black balls, and 8 blue balls. a.) Determine the probability that it is blue. b.) Three balls are drawn successively. Find the probability that they are drawn in the order orange, black, and blue if the ball is not replaced.
From the table, find the probability that the person is a: 1. Male from area IV 2. Female and not from area III or area V
b. A survey of teenagers showed that 75% of them spend their pocket money on clothing. Find the probability that among the 6 teenagers selected at random, at most 2 spend their pocket money on clothing.
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A4. Five marbles are to be chosen at random from 8 red marbles and 5 yellow marbles, Find the probability that a all 5 marbles are red. b. at least 2 marbles are red. c 3 marbles are red and 2 marbles are yellow.
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3. Forty percent of chocolates are black chocolates. Let Y denotes the number of black chocolates among ten randomly selected chocolates. Find the probability that Y is a) exactly 5; b) more than 8; c) at most 8.